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Finding the Fourth Proportional to 6,600.79, 9,109.26 and 3,949.71

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Solution

The fourth proportional to 6,600.79, 9,109.26 and 3,949.71 is: 5,450.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,600.79 : 9,109.26 = 3,949.71 : x
  2. Step 2: Convert to fraction form
    6,600.79/9,109.26 = 3,949.71/x
  3. Step 3: Cross multiply
    6,600.79x = 9,109.26 × 3,949.71
  4. Step 4: Simplify right side
    6,600.79x = 35,978,952.39
  5. Step 5: Solve for x
    x = 35,978,952.39/6,600.79
  6. Step 6: Final answer
    x = 5,450.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.