The London outfit could only draw 0-0 with Everton on Tuesday, but a win against Fulham at the weekend would take them five points clear of fifth-placed Tottenham Hotspur.
"It's important. We always knew this week was going to be a big one for us. We're still unbeaten in a load of games and hopefully we can finish the week off strongly by getting a win against Fulham. That will put us in a strong position," he told the London Evening Standard.
"It was important for us not to lose against Everton. We still have a lot of confidence. It didn't quite happen for us in the final third but overall we were quite solid. We're looking forward to the weekend.
"Tottenham and Chelsea still have tough games. Teams are going to drop points and we're still positive and confident we can finish in the top four. We're third at the moment and Chelsea and Tottenham may feel a bit of pressure going into their games to get the three points."
Ramsey has made 41 appearances for the club this season.