That sequence, which followed a run of three games without a win, stems from the right attitude within David Moyes' squad, who have turned in increasingly up-tempo displays.
"It's good to get the three points," Welbeck told Sky Sports. "We had to make sure once we came out today we were ready to go, and thankfully we got a couple of goals in the first half and then managed to control the game.
"As a squad, we've sat down and agreed that we really want to get the performances under our belt and start winning games. That's four wins, we've set a platform now, so we've got to keep on building momentum.
"You've always got to keep positive. That's the Manchester United way. There are no negative vibes, we just stick to the positives."
Welbeck was substituted shortly before the hour mark of Saturday's victory, with what was later confirmed as a sore knee. United's next match is against Hull City on Boxing Day.