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Finding the Fourth Proportional to 3,671.87, 5,067 and 2,179.22

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Solution

The fourth proportional to 3,671.87, 5,067 and 2,179.22 is: 3,007.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,671.87 : 5,067 = 2,179.22 : x
  2. Step 2: Convert to fraction form
    3,671.87/5,067 = 2,179.22/x
  3. Step 3: Cross multiply
    3,671.87x = 5,067 × 2,179.22
  4. Step 4: Simplify right side
    3,671.87x = 11,042,082.41
  5. Step 5: Solve for x
    x = 11,042,082.41/3,671.87
  6. Step 6: Final answer
    x = 3,007.21

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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.