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Finding the Fourth Proportional to 7,318.56, 10,987.92 and 6,229.92

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Solution

The fourth proportional to 7,318.56, 10,987.92 and 6,229.92 is: 9,353.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.56 : 10,987.92 = 6,229.92 : x
  2. Step 2: Convert to fraction form
    7,318.56/10,987.92 = 6,229.92/x
  3. Step 3: Cross multiply
    7,318.56x = 10,987.92 × 6,229.92
  4. Step 4: Simplify right side
    7,318.56x = 68,453,862.57
  5. Step 5: Solve for x
    x = 68,453,862.57/7,318.56
  6. Step 6: Final answer
    x = 9,353.46

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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.