Home / 3,747.20-5,170.98-2,153.96

Finding the Fourth Proportional to 3,747.20, 5,170.98 and 2,153.96

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Solution

The fourth proportional to 3,747.20, 5,170.98 and 2,153.96 is: 2,972.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.20 : 5,170.98 = 2,153.96 : x
  2. Step 2: Convert to fraction form
    3,747.20/5,170.98 = 2,153.96/x
  3. Step 3: Cross multiply
    3,747.20x = 5,170.98 × 2,153.96
  4. Step 4: Simplify right side
    3,747.20x = 11,138,058.23
  5. Step 5: Solve for x
    x = 11,138,058.23/3,747.20
  6. Step 6: Final answer
    x = 2,972.37

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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.