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Reference table

Proportion Table: x (where a/b = c/x) by a

Reference table of x (where a/b = c/x) for Proportion across a range of a values — exact, engine-computed figures you can read off at a glance.

By Vikram Iyer, M.Sc Mathematics · Updated Jun 2026 · 1 min read

This proportion reference table shows the x (where a/b = c/x) for a range of a values, assuming a b of 3 and a c of 8. Every figure is computed with the same engine that powers our Proportion Calculator, so the numbers are exact.

ax (where a/b = c/x)
0.548.0000
124.0000
1.516.0000
212.0000
38.0000
46.0000
64.0000
102.4000
141.7143
201.2000

How to use this table

Find the row closest to your a and read across to the x (where a/b = c/x). For a value between two rows, the real figure sits between them — or enter your exact numbers in the Proportion Calculator for a precise answer.

Need a value that is not in the table? — the Proportion Calculator does it instantly, for free, with the formula and a worked example built in.

Continue exploring math calculators with these tools: Margin of Error Calculator, Sample Size Calculator, Confidence Interval Calculator, Coefficient of Variation Calculator, Regular Heptagon Area Calculator.

Calculators in this guide

Frequently asked questions

Each cell is computed with the standard formula using exact arithmetic — the same calculation behind our Proportion Calculator — so every figure is accurate for the stated assumptions.

Yes. The table covers common a values; for any exact figure, enter your own numbers in the Proportion Calculator.

Vikram Iyer · M.Sc Mathematics

Vikram Iyer is a mathematics educator with over fifteen years of teaching experience, specialising in making quantitative concepts clear and practical for everyday use.