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Finding the Fourth Proportional to 8,323.87, 12,489.08 and 3,945.01

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Solution

The fourth proportional to 8,323.87, 12,489.08 and 3,945.01 is: 5,919.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,323.87 : 12,489.08 = 3,945.01 : x
  2. Step 2: Convert to fraction form
    8,323.87/12,489.08 = 3,945.01/x
  3. Step 3: Cross multiply
    8,323.87x = 12,489.08 × 3,945.01
  4. Step 4: Simplify right side
    8,323.87x = 49,269,494.54
  5. Step 5: Solve for x
    x = 49,269,494.54/8,323.87
  6. Step 6: Final answer
    x = 5,919.06

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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.