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Finding the Fourth Proportional to 8,864.13, 13,283.64 and 4,917.12

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Solution

The fourth proportional to 8,864.13, 13,283.64 and 4,917.12 is: 7,368.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,864.13 : 13,283.64 = 4,917.12 : x
  2. Step 2: Convert to fraction form
    8,864.13/13,283.64 = 4,917.12/x
  3. Step 3: Cross multiply
    8,864.13x = 13,283.64 × 4,917.12
  4. Step 4: Simplify right side
    8,864.13x = 65,317,251.92
  5. Step 5: Solve for x
    x = 65,317,251.92/8,864.13
  6. Step 6: Final answer
    x = 7,368.72

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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.