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Finding the Fourth Proportional to 8,353.76, 12,523.36 and 7,129.04

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Solution

The fourth proportional to 8,353.76, 12,523.36 and 7,129.04 is: 10,687.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,353.76 : 12,523.36 = 7,129.04 : x
  2. Step 2: Convert to fraction form
    8,353.76/12,523.36 = 7,129.04/x
  3. Step 3: Cross multiply
    8,353.76x = 12,523.36 × 7,129.04
  4. Step 4: Simplify right side
    8,353.76x = 89,279,534.37
  5. Step 5: Solve for x
    x = 89,279,534.37/8,353.76
  6. Step 6: Final answer
    x = 10,687.35

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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.