Add three fingers to the barre at fret 5 and you have A: the same chord as your open A, an octave higher. Build it one finger at a time.
A
- 1Finger 1low E string and B string and high e string, fret 5
- 2Finger 2G string, fret 6
- 3Finger 3A string, fret 7
- 4Finger 4D string, fret 7