Which of the following is a proportion?

twenty-eight over four equals fourteen over two

seven over fifty-six equals four over twenty-eight

four over seven equals three over six

twenty-eight over seven equals one over four

Question

Which of the following is a proportion?

twenty-eight over four equals fourteen over two

seven over fifty-six equals four over twenty-eight

four over seven equals three over six

twenty-eight over seven equals one over four

directrix · Answer

twenty-eight over four equals fourteen over two --> IS a proportion
28/4 = 14/2
7 = 7 

seven over fifty-six equals four over twenty-eight --> is NOT a proportion
7/56 = 4/28
1/8 = 1/4

four over seven equals three over six ---> is NOT a proportion
4/7 = 3/6
4/7 = 1/2

twenty-eight over seven equals one over four ---> Is NOT a proportion
28/7= 1/4
4/1 = 1/4