Photoshop/Image help

[BStecke]

Hey all . . . ok, first of all I want to send out scans of Blu-ray covers. When I scan the cover and print it, it comes out too big. First of all, I would just like to say how extremely fu*k stupid this is. End of rant. I know Blu-ray covers are typically 3118x1748 (this IS pixels, right!?), but when I try to resize it to that, Photoshop says the dimensions are like 6x2 inches, which obviously is too small. This seems like it should be a pretty straight forward process, but apparently there's something I'm missing. In short, how do I resize the image so that when I print it out I can cut it out and just put it in the case and it'll be the right fuc*king size. Somebody please help me out, I'm about to throw my god*amn computer out the window

Edit: Seriously . . . I consider myself a smart person. Nothing this fu*king simple should be this difficult. Why can't somebody just make a photo editing program where you grab a corner and it tells you ""The image is THIS big" and you make it how damn big you want. I guess that would make too much sense.