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Finding the Fourth Proportional to 8,788.38, 13,169.61 and 4,891.74

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Solution

The fourth proportional to 8,788.38, 13,169.61 and 4,891.74 is: 7,330.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.38 : 13,169.61 = 4,891.74 : x
  2. Step 2: Convert to fraction form
    8,788.38/13,169.61 = 4,891.74/x
  3. Step 3: Cross multiply
    8,788.38x = 13,169.61 × 4,891.74
  4. Step 4: Simplify right side
    8,788.38x = 64,422,308.02
  5. Step 5: Solve for x
    x = 64,422,308.02/8,788.38
  6. Step 6: Final answer
    x = 7,330.40

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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.