Yes. I forgot about the bottom toolbar. I think it is about 35 pixels high (at least on my 300), so that makes the actual text area of the reader appx 600x765 pixels or 3 inches x 3.83 inches. so you are correct that a 3 to 4 (or 4 to 3 ratio is slightly off.

I used the trial version of Nitro PDF Professional to rotate and crop your document (see attached).