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Finding the Fourth Proportional to 3,174.44, 4,371.08 and 2,815.20

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Solution

The fourth proportional to 3,174.44, 4,371.08 and 2,815.20 is: 3,876.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,174.44 : 4,371.08 = 2,815.20 : x
  2. Step 2: Convert to fraction form
    3,174.44/4,371.08 = 2,815.20/x
  3. Step 3: Cross multiply
    3,174.44x = 4,371.08 × 2,815.20
  4. Step 4: Simplify right side
    3,174.44x = 12,305,450.34
  5. Step 5: Solve for x
    x = 12,305,450.34/3,174.44
  6. Step 6: Final answer
    x = 3,876.42

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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.