The correct ways to write the ratio that compares 4 electronic devices for every 3 people are:
- 4 to 3 - This is a verbal expression of the ratio.
- 4:3 - This is a symbolic representation of the ratio.
- Start fraction 4 over 3 end fraction - This is a fractional representation of the ratio.
The correct response is: 4 to 3, 4:3, Start fraction 4 over 3 end fraction.