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Finding the Fourth Proportional to 8,635.61, 11,916.09 and 5,447.71

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Solution

The fourth proportional to 8,635.61, 11,916.09 and 5,447.71 is: 7,517.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,635.61 : 11,916.09 = 5,447.71 : x
  2. Step 2: Convert to fraction form
    8,635.61/11,916.09 = 5,447.71/x
  3. Step 3: Cross multiply
    8,635.61x = 11,916.09 × 5,447.71
  4. Step 4: Simplify right side
    8,635.61x = 64,915,335.20
  5. Step 5: Solve for x
    x = 64,915,335.20/8,635.61
  6. Step 6: Final answer
    x = 7,517.17

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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.