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Finding the Fourth Proportional to 8,791.62, 13,184.82 and 4,788.39

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Solution

The fourth proportional to 8,791.62, 13,184.82 and 4,788.39 is: 7,181.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.62 : 13,184.82 = 4,788.39 : x
  2. Step 2: Convert to fraction form
    8,791.62/13,184.82 = 4,788.39/x
  3. Step 3: Cross multiply
    8,791.62x = 13,184.82 × 4,788.39
  4. Step 4: Simplify right side
    8,791.62x = 63,134,060.24
  5. Step 5: Solve for x
    x = 63,134,060.24/8,791.62
  6. Step 6: Final answer
    x = 7,181.16

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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.