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Finding the Fourth Proportional to 8,812.12, 13,197.93 and 5,105.17

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Solution

The fourth proportional to 8,812.12, 13,197.93 and 5,105.17 is: 7,646.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.12 : 13,197.93 = 5,105.17 : x
  2. Step 2: Convert to fraction form
    8,812.12/13,197.93 = 5,105.17/x
  3. Step 3: Cross multiply
    8,812.12x = 13,197.93 × 5,105.17
  4. Step 4: Simplify right side
    8,812.12x = 67,377,676.30
  5. Step 5: Solve for x
    x = 67,377,676.30/8,812.12
  6. Step 6: Final answer
    x = 7,646.02

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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.