Jane and Fred each have their own collection of red and blue bingo chips. The ratio of the number of Jane’s chips to the number of Fred’s chips is \(3:2\). When they combine their chips, the ratio of the number of red chips to the number of blue chips is \(7:3\). For Jane’s chips, the ratio of the number of red chips to the number of blue chips is \(4:1\).
What is the ratio of the number of red chips to the number of blue chips for Fred’s bingo chips?