Voltage dividers value signification
It's usually easier to do it using resistors you have. If you do it with resistors you don't have, it will take an extra day or so for them to arrive.

As you have correctly noticed, any two resistors should have the correct ratio for the voltage division. However ...

The smallest resistor \$R_{min}\$you can use is governed by
a) the driving current available at the source

The largest resistors \$R_{max}\$you can use are governed by
a) the resistive load you have to drive
b) and how fast you have to drive changes through any stray capacity it has

If you are lucky, then \$R_{min}\$>\$R_{min}\$, and there are some solutions available. This is usually the case with op-amps and CMOS gates in all combinations. This sometimes isn't the case with very weak sources, or heavy loads, and then you have to use something other than a voltage divider.