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Finding the Fourth Proportional to 8,758.82, 13,135.41 and 2,913.86

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Solution

The fourth proportional to 8,758.82, 13,135.41 and 2,913.86 is: 4,369.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.82 : 13,135.41 = 2,913.86 : x
  2. Step 2: Convert to fraction form
    8,758.82/13,135.41 = 2,913.86/x
  3. Step 3: Cross multiply
    8,758.82x = 13,135.41 × 2,913.86
  4. Step 4: Simplify right side
    8,758.82x = 38,274,745.78
  5. Step 5: Solve for x
    x = 38,274,745.78/8,758.82
  6. Step 6: Final answer
    x = 4,369.85

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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.