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Finding the Fourth Proportional to 6,399.05, 9,608.99 and 3,949.44

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Solution

The fourth proportional to 6,399.05, 9,608.99 and 3,949.44 is: 5,930.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,399.05 : 9,608.99 = 3,949.44 : x
  2. Step 2: Convert to fraction form
    6,399.05/9,608.99 = 3,949.44/x
  3. Step 3: Cross multiply
    6,399.05x = 9,608.99 × 3,949.44
  4. Step 4: Simplify right side
    6,399.05x = 37,950,073.68
  5. Step 5: Solve for x
    x = 37,950,073.68/6,399.05
  6. Step 6: Final answer
    x = 5,930.58

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1.5x scale

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.