Question

Which of the following proportions are true

1:4= 2:5
6:9= 10:12
5:11= 15:30
2:7= 4:14

Answer 1

2:7=4:14 = is a TRUE proportion.

Answer 2

2:7 = 4:14 because each is equal to 2/7. If you simplify 4:14 by dividing by 2, it simplifies to 2:7.