Finding the Fourth Proportional to 5,138,142.58, 7,091,392.13 and 2,962,260.75
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Solution
The fourth proportional to 5,138,142.58, 7,091,392.13 and 2,962,260.75 is: 4,088,355.32
Step by Step Solution
- Step 1: Write the proportion equation
5,138,142.58 : 7,091,392.13 = 2,962,260.75 : x - Step 2: Convert to fraction form
5,138,142.58/7,091,392.13 = 2,962,260.75/x - Step 3: Cross multiply
5,138,142.58x = 7,091,392.13 × 2,962,260.75 - Step 4: Simplify right side
5,138,142.58x = 21,006,552,569,557.90 - Step 5: Solve for x
x = 21,006,552,569,557.90/5,138,142.58 - Step 6: Final answer
x = 4,088,355.32
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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.