Respuesta :
Here are some:
(3:4, 3/4, 3 to 4), (6:8, 6/8, 6 to 8), (9:12, 9/12, 9 to 12), (12:16, 12/16, 12 to 16)
(3:4, 3/4, 3 to 4), (6:8, 6/8, 6 to 8), (9:12, 9/12, 9 to 12), (12:16, 12/16, 12 to 16)