[MC5C]

baritone uke is nylon strings and scale length around 19". Tenor guitar is steel strings and scale length around 23", although 21" up to 27" used to be common. Tenor guitar is/was kind of a cross-over from banjo, hence similar in scale length to common banjo scales, and tuned in fifths like a tenor banjo (or a mandolin). No reason in the world not to tune it the same as a baritone uke, or the top four strings of a guitar. Banjo players seem to do an awful lot of finger picking and rolls on their instruments, so there may be some advantage to tuning in fifths for finger picking in that style.