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Finding the Fourth Proportional to 8,763.39, 13,144.82 and 2,919.85

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Solution

The fourth proportional to 8,763.39, 13,144.82 and 2,919.85 is: 4,379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,763.39 : 13,144.82 = 2,919.85 : x
  2. Step 2: Convert to fraction form
    8,763.39/13,144.82 = 2,919.85/x
  3. Step 3: Cross multiply
    8,763.39x = 13,144.82 × 2,919.85
  4. Step 4: Simplify right side
    8,763.39x = 38,380,855.22
  5. Step 5: Solve for x
    x = 38,380,855.22/8,763.39
  6. Step 6: Final answer
    x = 4,379.68

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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.