In this post I will cover three common major chord shapes used in fourths tuning. I'll introduce each in turn then provide an example of playing a I-IV-V progression using each of the chord shapes.
To assist you with understanding the construction of each chord type, following is a fretboard chart showing the intervals in fourths tuning, the sixth string is at the bottom of the chart.
Four note chord - shape 1
This chord is orientated to the right of the tonic. For those of you who already play in standard tuning, this shape is the same as the "E-type" chord shape played on the sixth to third strings. The following diagrams show the suggested fingering for this chord and its intervals.