Final answer:
To find the width of the new phone, set up a proportion using the lengths of the old and new phone and solve for the width. The width of the new phone will be 1.5 inches.
Step-by-step explanation:
To find the width of the new phone, we can set up a proportion using the lengths of the old and new phone. The proportion can be set up as:
1.4/3.83.8 = 0.9/w
Cross-multiplying to solve for w, we get:
1.352 = 0.9w
Dividing both sides by 0.9 gives us:
w = 1.5 inches
Therefore, the width of the new phone will be 1.5 inches.