Pevlika Browser Apps

Proportion Calculator

Solve the missing value in two equal ratios.

Runs in your browser — nothing is uploaded
Leave one of C or D empty to solve for it.

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How to use Proportion Calculator

  1. Enter A and B.
  2. Enter C or D to solve for the other.
  3. Read the simplified ratio and result.

Example: 2:3 = 8:12.

Questions

How do I solve a proportion?

Multiply across and divide by the known matching term. With A:B = C:D, D = B × C ÷ A; a zero divisor has no unique solution.

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