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Finding the Fourth Proportional to 8,747.87, 13,132.13 and 7,378.56

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Solution

The fourth proportional to 8,747.87, 13,132.13 and 7,378.56 is: 11,076.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,747.87 : 13,132.13 = 7,378.56 : x
  2. Step 2: Convert to fraction form
    8,747.87/13,132.13 = 7,378.56/x
  3. Step 3: Cross multiply
    8,747.87x = 13,132.13 × 7,378.56
  4. Step 4: Simplify right side
    8,747.87x = 96,896,172.24
  5. Step 5: Solve for x
    x = 96,896,172.24/8,747.87
  6. Step 6: Final answer
    x = 11,076.55

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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.