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Finding the Fourth Proportional to 6,621.38, 9,914.30 and 3,494.90

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Solution

The fourth proportional to 6,621.38, 9,914.30 and 3,494.90 is: 5,232.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.38 : 9,914.30 = 3,494.90 : x
  2. Step 2: Convert to fraction form
    6,621.38/9,914.30 = 3,494.90/x
  3. Step 3: Cross multiply
    6,621.38x = 9,914.30 × 3,494.90
  4. Step 4: Simplify right side
    6,621.38x = 34,649,487.07
  5. Step 5: Solve for x
    x = 34,649,487.07/6,621.38
  6. Step 6: Final answer
    x = 5,232.97

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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.