Finding the Fourth Proportional to 2,686.12, 4,024.86 and 2,591.08
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Solution
The fourth proportional to 2,686.12, 4,024.86 and 2,591.08 is: 3,882.45
Step by Step Solution
- Step 1: Write the proportion equation
2,686.12 : 4,024.86 = 2,591.08 : x - Step 2: Convert to fraction form
2,686.12/4,024.86 = 2,591.08/x - Step 3: Cross multiply
2,686.12x = 4,024.86 × 2,591.08 - Step 4: Simplify right side
2,686.12x = 10,428,734.25 - Step 5: Solve for x
x = 10,428,734.25/2,686.12 - Step 6: Final answer
x = 3,882.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.