Home / 3,721.24-5,581.25-1,380.70

Finding the Fourth Proportional to 3,721.24, 5,581.25 and 1,380.70

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Solution

The fourth proportional to 3,721.24, 5,581.25 and 1,380.70 is: 2,070.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.24 : 5,581.25 = 1,380.70 : x
  2. Step 2: Convert to fraction form
    3,721.24/5,581.25 = 1,380.70/x
  3. Step 3: Cross multiply
    3,721.24x = 5,581.25 × 1,380.70
  4. Step 4: Simplify right side
    3,721.24x = 7,706,031.88
  5. Step 5: Solve for x
    x = 7,706,031.88/3,721.24
  6. Step 6: Final answer
    x = 2,070.82

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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.