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Finding the Fourth Proportional to 8,445.17, 12,605.92 and 7,447.64

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Solution

The fourth proportional to 8,445.17, 12,605.92 and 7,447.64 is: 11,116.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.17 : 12,605.92 = 7,447.64 : x
  2. Step 2: Convert to fraction form
    8,445.17/12,605.92 = 7,447.64/x
  3. Step 3: Cross multiply
    8,445.17x = 12,605.92 × 7,447.64
  4. Step 4: Simplify right side
    8,445.17x = 93,884,272.38
  5. Step 5: Solve for x
    x = 93,884,272.38/8,445.17
  6. Step 6: Final answer
    x = 11,116.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.