[squeerisott]

Salamu alaikum wr wb, this past monday, I visited a masjid that has a seperate floor for women. When the Imam lead salah, speakers were turned on in the womens room so that we could hear the Imam and follow him in salat. Between the two sujuuds in the third rakkah, we could not hear him say "Allahu Akbar", so we stayed in sujuud longer when he had already gotten up we didnt realize we were one movement behind until he did the rukkuh in the fourth rakaat. My question is:should we quickly do rukkuh (if we missed the Imam's rukkuh) and continue with him, and do we have to repeat the salat because of this mistake?