Geometric Mean of Three Numbers Table: Geometric mean by First number
Reference table of geometric mean for Geometric Mean of Three Numbers across a range of first number values — exact, engine-computed figures you can read off at a glance.
Geometric Mean of Three Numbers Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Geometric mean
4.0000
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Geometric Mean of Three Numbers Calculator
The Geometric Mean of Three Numbers Calculator works out your geometric mean in an instant. Enter first number, second number and third number and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the first number.
- Enter the second number.
- Enter the third number.
- Read off your geometric mean — the calculator updates automatically, with no button to press.
Formula
The Geometric Mean of Three Numbers Calculator uses the formula:
Geometric mean = (First number × Second number × Third number)^(1 ÷ 3)
Worked example
For example, with first number of 2, second number of 4 and third number of 8, the geometric mean is 4.0000.
| First number | 2 |
|---|---|
| Second number | 4 |
| Third number | 8 |
| Geometric mean | 4.0000 |
|---|
Results are estimates for educational use, not professional advice.
Key terms explained
- Mean
- The average of a set of numbers — their sum divided by how many there are.
Frequently asked questions
Multiply them and take the cube root. For 2, 4 and 8 the product is 64, and its cube root is 4.
For averaging growth rates, ratios and other values that combine by multiplication.
The standard geometric mean needs non-negative numbers, since the product must be valid under the root.
The geometric mean is never larger than the arithmetic mean and is less swayed by one large value.
The Geometric Mean of Three Numbers Calculator uses the formula: Geometric mean = (First number × Second number × Third number)^(1 ÷ 3). For example, with first number of 2, second number of 4 and third number of 8, the geometric mean is 4.0000.
Enter the first number. Enter the second number. Enter the third number. Read off your geometric mean — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Geometric Mean of Three Numbers: Formula, Steps & Examples
Learn how to calculate Geometric Mean of Three Numbers — the formula explained step by step, with worked examples and a free calculator to check your answer.