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Finding the Fourth Proportional to 8,812.40, 13,217.40 and 2,238.02

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Solution

The fourth proportional to 8,812.40, 13,217.40 and 2,238.02 is: 3,356.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.40 : 13,217.40 = 2,238.02 : x
  2. Step 2: Convert to fraction form
    8,812.40/13,217.40 = 2,238.02/x
  3. Step 3: Cross multiply
    8,812.40x = 13,217.40 × 2,238.02
  4. Step 4: Simplify right side
    8,812.40x = 29,580,805.55
  5. Step 5: Solve for x
    x = 29,580,805.55/8,812.40
  6. Step 6: Final answer
    x = 3,356.73

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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.