Thanks for the help in this thread, everyone. @jbmanning5 is correct, the aspect ratio is maintained when you resize artwork in the Glowforge app.
If you’re interested in using Inkscape to design, our community has created a wealth of tutorials to get you started using. You can find these in the Tips & Tricks section of the community forum.
I’m going to close this thread, but if you have any other questions, please start a new topic, or email us at support@glowforge.com. Happy printing!