How do you write 4 is to 16 as 12 is to 48 as a proportion in fractional notation? Do not simplify your answer.

_ = _

4/16 = 12/48

To write "4 is to 16 as 12 is to 48" as a proportion in fractional notation, you can express the two ratios using a fraction format:

4/16 = 12/48