Squatting with your feet 4 inches apart is really, really, really narraow......so narrow that I doubt you are able to clear your hips and sit back.
A typical narrow squat is right at shoulder width plus and inch or two, that is how I oly squat, or catch a snatch or clean
A wide squat can be damn near the splits for some guys, I like to be at about 2 feet past shoulder width