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Finding the Fourth Proportional to 8,758.92, 13,142.03 and 5,255.67

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Solution

The fourth proportional to 8,758.92, 13,142.03 and 5,255.67 is: 7,885.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.92 : 13,142.03 = 5,255.67 : x
  2. Step 2: Convert to fraction form
    8,758.92/13,142.03 = 5,255.67/x
  3. Step 3: Cross multiply
    8,758.92x = 13,142.03 × 5,255.67
  4. Step 4: Simplify right side
    8,758.92x = 69,070,146.53
  5. Step 5: Solve for x
    x = 69,070,146.53/8,758.92
  6. Step 6: Final answer
    x = 7,885.69

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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.