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Finding the Fourth Proportional to 3,425.97, 4,747.40 and 3,217.89

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Solution

The fourth proportional to 3,425.97, 4,747.40 and 3,217.89 is: 4,459.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.97 : 4,747.40 = 3,217.89 : x
  2. Step 2: Convert to fraction form
    3,425.97/4,747.40 = 3,217.89/x
  3. Step 3: Cross multiply
    3,425.97x = 4,747.40 × 3,217.89
  4. Step 4: Simplify right side
    3,425.97x = 15,276,594.90
  5. Step 5: Solve for x
    x = 15,276,594.90/3,425.97
  6. Step 6: Final answer
    x = 4,459.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.