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Finding the Fourth Proportional to 8,861.72, 13,287 and 4,699.10

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Solution

The fourth proportional to 8,861.72, 13,287 and 4,699.10 is: 7,045.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.72 : 13,287 = 4,699.10 : x
  2. Step 2: Convert to fraction form
    8,861.72/13,287 = 4,699.10/x
  3. Step 3: Cross multiply
    8,861.72x = 13,287 × 4,699.10
  4. Step 4: Simplify right side
    8,861.72x = 62,436,941.70
  5. Step 5: Solve for x
    x = 62,436,941.70/8,861.72
  6. Step 6: Final answer
    x = 7,045.69

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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.