Finding the Fourth Proportional to 4,660.75, 6,431.84 and 2,797.75
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Solution
The fourth proportional to 4,660.75, 6,431.84 and 2,797.75 is: 3,860.90
Step by Step Solution
- Step 1: Write the proportion equation
4,660.75 : 6,431.84 = 2,797.75 : x - Step 2: Convert to fraction form
4,660.75/6,431.84 = 2,797.75/x - Step 3: Cross multiply
4,660.75x = 6,431.84 × 2,797.75 - Step 4: Simplify right side
4,660.75x = 17,994,680.36 - Step 5: Solve for x
x = 17,994,680.36/4,660.75 - Step 6: Final answer
x = 3,860.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.