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Finding the Fourth Proportional to 3,951.98, 5,449.65 and 3,394.30

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Solution

The fourth proportional to 3,951.98, 5,449.65 and 3,394.30 is: 4,680.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.98 : 5,449.65 = 3,394.30 : x
  2. Step 2: Convert to fraction form
    3,951.98/5,449.65 = 3,394.30/x
  3. Step 3: Cross multiply
    3,951.98x = 5,449.65 × 3,394.30
  4. Step 4: Simplify right side
    3,951.98x = 18,497,747.00
  5. Step 5: Solve for x
    x = 18,497,747.00/3,951.98
  6. Step 6: Final answer
    x = 4,680.63

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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.