QPR chief executive Philip Beard says the club needed to hire a new manager before their predicament became even worse.
The Hoops have made a terrible start to their second season back in the top flight and, prior to Saturday's match with Manchester United, they were bottom of the table, with four points and no wins from 12 matches.
And the QPR board reacted to their sluggish start by firing Mark Hughes on Friday, going on to replace him with former Portsmouth and Tottenham boss Harry Redknapp.
Beard explained: "The situation is only not salvagable when it is impossible.
"We have played 12 games without a win and we felt it was the right time to act in the best interests of the club. We are four points behind the pack and five points away from safety.
"Like every club in that part of the league, we will work really hard to get out of it, because the prize of staying in the Premier League is really high.
"But, ultimately, three clubs won't survive. We will be giving everything to make sure we are not one of those three."
QPR have been criticised for making the change just a day before their clash with Manchester United.
But Beard said: "We have spent a lot of time on it and this is not something we have done lightly.
"The owners have treated this situation very seriously, They have been in different parts of the world and there have been a whole series of meetings.
"Harry Redknapp is a top-class Premier League manager and he has decided this was the right move for him."
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