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Finding the Fourth Proportional to 3,171.94, 4,757.91 and 2,979.26

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Solution

The fourth proportional to 3,171.94, 4,757.91 and 2,979.26 is: 4,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.94 : 4,757.91 = 2,979.26 : x
  2. Step 2: Convert to fraction form
    3,171.94/4,757.91 = 2,979.26/x
  3. Step 3: Cross multiply
    3,171.94x = 4,757.91 × 2,979.26
  4. Step 4: Simplify right side
    3,171.94x = 14,175,062.84
  5. Step 5: Solve for x
    x = 14,175,062.84/3,171.94
  6. Step 6: Final answer
    x = 4,468.90

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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.