whats the scale factor if these polygons are proportional?

Question

please answer in a format like: prop, s.f.= 1:4 

 

1. A = 2, 6, 8, 9 B = 4, 12, 16, 18

 

2. A = 2, 3, 6, 10 B= 6, 9, 18, 30

 

3. A = 7, 10, 14, 15 B = 17.5, 25, 35, 37.5

 

4. A = 4, 4, 5, 6 B = 1.2, 1.2, 1.5, 1.8

 

5. A = 9, 10, 16, 19 B = 41.4, 46, 73.6, 87.4

 

 

Answer 1

I will do the first five. You should be able to do the rest.

1) 4/2 = 2

2) 6/2 = 3

3) 17.5/7 = 2.5

4) 1.2/4 = .3

5) 41.4/9 = 4.6