Proportions

Proportion

A relationship that states that the two ratios or two rates are equal

Expression of proportion

In fraction form

Method (1) to determine the unknown value in a proportion

Unitary method

Method (2) to determine the unknown value in a proportion

Proportion method

Method (3) to determine the unknown value in a proportion

Cross multiplication method

Example of proportion

Proportions: 10 beans have a mass of 17 g, then 30 beans have a mass of 51 g

Proportions: The price of 3 balls is RM5, then the price of 12 balls is RM20

Proportions: 192km in real distance is only 24 cm in a map with 1 cm in the map represent 8 cm