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Finding the Fourth Proportional to 8,812.61, 13,217.67 and 4,871.15

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Solution

The fourth proportional to 8,812.61, 13,217.67 and 4,871.15 is: 7,306.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.61 : 13,217.67 = 4,871.15 : x
  2. Step 2: Convert to fraction form
    8,812.61/13,217.67 = 4,871.15/x
  3. Step 3: Cross multiply
    8,812.61x = 13,217.67 × 4,871.15
  4. Step 4: Simplify right side
    8,812.61x = 64,385,187.13
  5. Step 5: Solve for x
    x = 64,385,187.13/8,812.61
  6. Step 6: Final answer
    x = 7,306.03

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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.