How long does it take for a horse to travel a mile and a half?

you really ought to do the math, if you haven't already. It's a simple equation, and you're trying to take the easy way out. 4 mph is written as 4 (miles) over 1 (hour). Set up a proportion and do the math. you really ought to do the math, if you haven't already. It's a simple equation, and you're trying to take the easy way out. 4 mph is written as 4 (miles) over 1 (hour). Set up a proportion and do the math.