Respuesta :
12/36 = 2/6 is in proportion
4/1 = 12/3 is also in proportion
6 /1 8 = 12 /34 is not in proportion ( 6/18 = 12/36)
4/1 = 12/3 is also in proportion
6 /1 8 = 12 /34 is not in proportion ( 6/18 = 12/36)