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Finding the Fourth Proportional to 8,482.72, 12,711.20 and 4,316.52

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Solution

The fourth proportional to 8,482.72, 12,711.20 and 4,316.52 is: 6,468.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,482.72 : 12,711.20 = 4,316.52 : x
  2. Step 2: Convert to fraction form
    8,482.72/12,711.20 = 4,316.52/x
  3. Step 3: Cross multiply
    8,482.72x = 12,711.20 × 4,316.52
  4. Step 4: Simplify right side
    8,482.72x = 54,868,149.02
  5. Step 5: Solve for x
    x = 54,868,149.02/8,482.72
  6. Step 6: Final answer
    x = 6,468.23

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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.