Respuesta :

2:6

3:9

4:12

These are all equivilant

1:3

Multiply by 2, 3, 4, 5.

2*1: 2*3 =  2 : 6

3*1: 3*3 =  3 : 9

4*1: 4*3 =  4 : 12

5*1: 5*3 =  5 : 15

Equivalent ratio could be either of  2:6,  3:9, 4:12, 5:15

Hope this helps.