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Finding the Fourth Proportional to 6,672.35, 9,207.81 and 3,839.78

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Solution

The fourth proportional to 6,672.35, 9,207.81 and 3,839.78 is: 5,298.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,672.35 : 9,207.81 = 3,839.78 : x
  2. Step 2: Convert to fraction form
    6,672.35/9,207.81 = 3,839.78/x
  3. Step 3: Cross multiply
    6,672.35x = 9,207.81 × 3,839.78
  4. Step 4: Simplify right side
    6,672.35x = 35,355,987.70
  5. Step 5: Solve for x
    x = 35,355,987.70/6,672.35
  6. Step 6: Final answer
    x = 5,298.88

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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.