如何在WPF中保持可伸缩、可滚动的内容的纵横比?

I'm fairly new to WPF and I've come across a problem that seems a bit tricky to solve. Basically I want a 4x4 grid thats scalable but keeps a square (or any other arbitrary) aspect ratio. This actually seems quite tricky to do, which surprises me because I would imagine its a reasonably common requirement.I'm fairly new to WPF and I've come across a pr