Lesson 95 of 171

Solving Proportions
Students learn to solve proportions using cross products. For example, to solve the proportion 9/15 = 6/d, remember that the cross products of a proportion must be equal, so 9 x d = 15 x 6, or 9d = 90, and dividing both sides by 9, d = 10.
Start Now to get your Online Math Help lessons from Your Teacher math tutors

Elementary / Middle
High School Math

Community College
College Math

*Also referred to as Elementary Algebra or Beginning Algebra.
Homeschoolers click here!