Ximpledu
English

Proportion

See how to solve a proportion
(colon form, fraction form).
2 examples and their solutions.

Colon Form

Formula

a : b = c : d
ad = bc

Example

(2x + 1) : 3 = x : 2
Solution

Fraction Form

Formula

ab = cd
ad = bc

Example

x2 = 4x - 15
Solution