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Finding the Fourth Proportional to 7,531.20, 10,393.92 and 7,289.28

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Solution

The fourth proportional to 7,531.20, 10,393.92 and 7,289.28 is: 10,060.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,531.20 : 10,393.92 = 7,289.28 : x
  2. Step 2: Convert to fraction form
    7,531.20/10,393.92 = 7,289.28/x
  3. Step 3: Cross multiply
    7,531.20x = 10,393.92 × 7,289.28
  4. Step 4: Simplify right side
    7,531.20x = 75,764,193.18
  5. Step 5: Solve for x
    x = 75,764,193.18/7,531.20
  6. Step 6: Final answer
    x = 10,060.04

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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.