Home / 3,814.20-5,721.30-1,351.80

Finding the Fourth Proportional to 3,814.20, 5,721.30 and 1,351.80

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Solution

The fourth proportional to 3,814.20, 5,721.30 and 1,351.80 is: 2,027.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,814.20 : 5,721.30 = 1,351.80 : x
  2. Step 2: Convert to fraction form
    3,814.20/5,721.30 = 1,351.80/x
  3. Step 3: Cross multiply
    3,814.20x = 5,721.30 × 1,351.80
  4. Step 4: Simplify right side
    3,814.20x = 7,734,053.34
  5. Step 5: Solve for x
    x = 7,734,053.34/3,814.20
  6. Step 6: Final answer
    x = 2,027.70

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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.