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Finding the Fourth Proportional to 8,665.32, 11,952.20 and 5,520.12

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Solution

The fourth proportional to 8,665.32, 11,952.20 and 5,520.12 is: 7,613.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.32 : 11,952.20 = 5,520.12 : x
  2. Step 2: Convert to fraction form
    8,665.32/11,952.20 = 5,520.12/x
  3. Step 3: Cross multiply
    8,665.32x = 11,952.20 × 5,520.12
  4. Step 4: Simplify right side
    8,665.32x = 65,977,578.26
  5. Step 5: Solve for x
    x = 65,977,578.26/8,665.32
  6. Step 6: Final answer
    x = 7,613.98

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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.