Help: Bending an arc while increasing size and angle, with even proportions and smooth curves

This may be the wrong place because it's for Blender art itself.. if so, please remove.

I have an arc. Lets say it's something like the image attached to this post.

How would I bend the tip of one end so the rest of the shape stays uniform and bends evenly / organically? I'm trying to have it keep fairly even proportions and smooth curves.

I've tried a few tutorials on bending, rotating, and they always end up with turns along specific vertices, giving a sharp turn or a stretched effect. "Skew" may be the right term I'm looking for.