How do I find the ration of the first number to the second and simplify?

0.4 to 1.2

1:3

Step-by-step explanation:

it is a bit easy to get it out of decimal ratio, so multiply it by 10, which gives you 4:12, so now you have a bigger answer to work with, you can divide 12 by 4, which gives you 3, and a ratio of 1:3

1 : 3

Step-by-step explanation:

0.4 x 3 is equivalent to 1.2

so 0.4 is 1 as 1.2 is 3