Solving Problems with Proportions
12th Grade · Math · 45 min
Lesson Preview
Learning Objective
I can solve real-world problems using proportional reasoning.
- 1
A proportion is two equivalent ratios, and equivalent ratios must have the same units.
- 2
To solve a proportion with an unknown value, you can use a procedure called cross-multiplying.
- 3
A map is an example of a scaled drawing, which is proportional to the real thing and can be used to set up a proportion to find an unknown distance.
