Proportion Calculator - Multi-Tools

Proportion Calculator

Solve proportion problems and find missing values with step-by-step solutions.

Enter Proportion

a : b = c : d

Leave one value empty to find the missing value

Options
How to Solve Proportions

In a proportion a : b = c : d:

  1. Cross multiply: a × d = b × c
  2. Solve for the missing value

Example:

  • 2 : 3 = x : 6
  • 2 × 6 = 3 × x
  • 12 = 3x
  • x = 4

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