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Finding the Fourth Proportional to 8,651.33, 12,975.81 and 3,103.87

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Solution

The fourth proportional to 8,651.33, 12,975.81 and 3,103.87 is: 4,655.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.33 : 12,975.81 = 3,103.87 : x
  2. Step 2: Convert to fraction form
    8,651.33/12,975.81 = 3,103.87/x
  3. Step 3: Cross multiply
    8,651.33x = 12,975.81 × 3,103.87
  4. Step 4: Simplify right side
    8,651.33x = 40,275,227.38
  5. Step 5: Solve for x
    x = 40,275,227.38/8,651.33
  6. Step 6: Final answer
    x = 4,655.38

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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.