Write the ratio as a fraction in simplest form, with whole numbers in the numerator and denominator.
6 : 1.2
The ratio can be simplified by moving the decimal point of 1.2 one place to the right to make it a whole number:
6 : 1.2 = 6 : 12/10
Simplifying the fraction by dividing both the numerator and denominator by their greatest common factor of 6:
6 : 12/10 = 1 : 2/5
Therefore, the ratio as a fraction in simplest form is 1 : 2/5.