Home / 3,882.20-5,821.48-1,415.28

Finding the Fourth Proportional to 3,882.20, 5,821.48 and 1,415.28

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Solution

The fourth proportional to 3,882.20, 5,821.48 and 1,415.28 is: 2,122.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.20 : 5,821.48 = 1,415.28 : x
  2. Step 2: Convert to fraction form
    3,882.20/5,821.48 = 1,415.28/x
  3. Step 3: Cross multiply
    3,882.20x = 5,821.48 × 1,415.28
  4. Step 4: Simplify right side
    3,882.20x = 8,239,024.21
  5. Step 5: Solve for x
    x = 8,239,024.21/3,882.20
  6. Step 6: Final answer
    x = 2,122.26

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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.