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Finding the Fourth Proportional to 6,639.35, 9,965.19 and 3,354.75

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Solution

The fourth proportional to 6,639.35, 9,965.19 and 3,354.75 is: 5,035.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.35 : 9,965.19 = 3,354.75 : x
  2. Step 2: Convert to fraction form
    6,639.35/9,965.19 = 3,354.75/x
  3. Step 3: Cross multiply
    6,639.35x = 9,965.19 × 3,354.75
  4. Step 4: Simplify right side
    6,639.35x = 33,430,737.68
  5. Step 5: Solve for x
    x = 33,430,737.68/6,639.35
  6. Step 6: Final answer
    x = 5,035.24

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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.