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Finding the Fourth Proportional to 8,939.15, 13,409.03 and 3,395.10

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Solution

The fourth proportional to 8,939.15, 13,409.03 and 3,395.10 is: 5,092.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.15 : 13,409.03 = 3,395.10 : x
  2. Step 2: Convert to fraction form
    8,939.15/13,409.03 = 3,395.10/x
  3. Step 3: Cross multiply
    8,939.15x = 13,409.03 × 3,395.10
  4. Step 4: Simplify right side
    8,939.15x = 45,524,997.75
  5. Step 5: Solve for x
    x = 45,524,997.75/8,939.15
  6. Step 6: Final answer
    x = 5,092.77

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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.