Proportion Solver

Solve proportions and cross multiplication

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Solve Proportion: A/B = C/D

=

Leave one field empty to solve for it

D =

8

3/4 = 6/?

Cross Multiplication Method

A × D = B × C

3 × 8 = 4 × 6

Direct Proportion Calculator

If X increases, Y increases proportionally

25

Inverse Proportion Calculator

If X increases, Y decreases proportionally

6

Percentage Proportion

X is what percent of Y? Or X% of Y is what?

%

25 is 25.00% of 100

Common Proportions

Golden Ratio:1 : 1.618Silver Ratio:1 : 2.414Rule of Thirds:1 : 216:9 (Widescreen):16 : 94:3 (Standard):4 : 31:1 (Square):1 : 1