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Finding the Fourth Proportional to 8,169.52, 12,187.61 and 7,943.56

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Solution

The fourth proportional to 8,169.52, 12,187.61 and 7,943.56 is: 11,850.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.52 : 12,187.61 = 7,943.56 : x
  2. Step 2: Convert to fraction form
    8,169.52/12,187.61 = 7,943.56/x
  3. Step 3: Cross multiply
    8,169.52x = 12,187.61 × 7,943.56
  4. Step 4: Simplify right side
    8,169.52x = 96,813,011.29
  5. Step 5: Solve for x
    x = 96,813,011.29/8,169.52
  6. Step 6: Final answer
    x = 11,850.51

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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.