Solve proportions and cross multiplication
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
Inverse Proportion Calculator
If X increases, Y decreases proportionally
Percentage Proportion
X is what percent of Y? Or X% of Y is what?
25 is 25.00% of 100
Common Proportions
Solve proportions and cross multiplication
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