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Finding the Fourth Proportional to 8,757.70, 13,136.55 and 7,951.30

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Solution

The fourth proportional to 8,757.70, 13,136.55 and 7,951.30 is: 11,926.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.70 : 13,136.55 = 7,951.30 : x
  2. Step 2: Convert to fraction form
    8,757.70/13,136.55 = 7,951.30/x
  3. Step 3: Cross multiply
    8,757.70x = 13,136.55 × 7,951.30
  4. Step 4: Simplify right side
    8,757.70x = 104,452,650.02
  5. Step 5: Solve for x
    x = 104,452,650.02/8,757.70
  6. Step 6: Final answer
    x = 11,926.95

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Similar ratio
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1.5x scale

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.