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Finding the Fourth Proportional to 8,067, 12,099.90 and 3,136.20

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Solution

The fourth proportional to 8,067, 12,099.90 and 3,136.20 is: 4,704.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,067 : 12,099.90 = 3,136.20 : x
  2. Step 2: Convert to fraction form
    8,067/12,099.90 = 3,136.20/x
  3. Step 3: Cross multiply
    8,067x = 12,099.90 × 3,136.20
  4. Step 4: Simplify right side
    8,067x = 37,947,706.38
  5. Step 5: Solve for x
    x = 37,947,706.38/8,067
  6. Step 6: Final answer
    x = 4,704.07

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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.