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Finding the Fourth Proportional to 8,489.11, 11,726.78 and 8,073.92

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Solution

The fourth proportional to 8,489.11, 11,726.78 and 8,073.92 is: 11,153.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.11 : 11,726.78 = 8,073.92 : x
  2. Step 2: Convert to fraction form
    8,489.11/11,726.78 = 8,073.92/x
  3. Step 3: Cross multiply
    8,489.11x = 11,726.78 × 8,073.92
  4. Step 4: Simplify right side
    8,489.11x = 94,681,133.08
  5. Step 5: Solve for x
    x = 94,681,133.08/8,489.11
  6. Step 6: Final answer
    x = 11,153.25

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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.