Unit 19 problems with answers from http://www.textbooksfree.org/
Need Help? Quick Notes Unit 19 Proportions and Part 3 Review will help
Go to PP 20     Practice Problems Index     Mathematics Internet Library

Find out if the following ratios are in proportion (equal) using cross multiplication.
1) 2:4 and 6:12






2) and

3) 2:5 and 11:20
Use cross multiplication to determine which fraction is larger.
4) and





5) and 6) and
Complete statements 7, 8, and 9 using either  >,  <, or  =.

7) _____
8) _____


9) _____
10) 4 of 5 girls and 8 of 10 boys passed a recent English test. Are these ratios in proportion?








11) A survey found that 5 of 9 students go to the library at least once a week. For honor students, the ratio was 18 to 25. Does one group have a higher ratio than the other?