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Finding the Fourth Proportional to 8,558.56, 12,837.84 and 2,715.52

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Solution

The fourth proportional to 8,558.56, 12,837.84 and 2,715.52 is: 4,073.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,558.56 : 12,837.84 = 2,715.52 : x
  2. Step 2: Convert to fraction form
    8,558.56/12,837.84 = 2,715.52/x
  3. Step 3: Cross multiply
    8,558.56x = 12,837.84 × 2,715.52
  4. Step 4: Simplify right side
    8,558.56x = 34,861,411.28
  5. Step 5: Solve for x
    x = 34,861,411.28/8,558.56
  6. Step 6: Final answer
    x = 4,073.28

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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.