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Finding the Fourth Proportional to 8,655.50, 12,989.02 and 3,183.50

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Solution

The fourth proportional to 8,655.50, 12,989.02 and 3,183.50 is: 4,777.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.50 : 12,989.02 = 3,183.50 : x
  2. Step 2: Convert to fraction form
    8,655.50/12,989.02 = 3,183.50/x
  3. Step 3: Cross multiply
    8,655.50x = 12,989.02 × 3,183.50
  4. Step 4: Simplify right side
    8,655.50x = 41,350,545.17
  5. Step 5: Solve for x
    x = 41,350,545.17/8,655.50
  6. Step 6: Final answer
    x = 4,777.37

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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.