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Finding the Fourth Proportional to 8,502.38, 12,753.60 and 7,407.56

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Solution

The fourth proportional to 8,502.38, 12,753.60 and 7,407.56 is: 11,111.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,502.38 : 12,753.60 = 7,407.56 : x
  2. Step 2: Convert to fraction form
    8,502.38/12,753.60 = 7,407.56/x
  3. Step 3: Cross multiply
    8,502.38x = 12,753.60 × 7,407.56
  4. Step 4: Simplify right side
    8,502.38x = 94,473,057.22
  5. Step 5: Solve for x
    x = 94,473,057.22/8,502.38
  6. Step 6: Final answer
    x = 11,111.37

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1.5x scale

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.