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Finding the Fourth Proportional to 3,877.16, 5,819.16 and 2,557.20

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Solution

The fourth proportional to 3,877.16, 5,819.16 and 2,557.20 is: 3,838.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.16 : 5,819.16 = 2,557.20 : x
  2. Step 2: Convert to fraction form
    3,877.16/5,819.16 = 2,557.20/x
  3. Step 3: Cross multiply
    3,877.16x = 5,819.16 × 2,557.20
  4. Step 4: Simplify right side
    3,877.16x = 14,880,755.95
  5. Step 5: Solve for x
    x = 14,880,755.95/3,877.16
  6. Step 6: Final answer
    x = 3,838.06

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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.