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Finding the Fourth Proportional to 3,879.06, 5,820.14 and 1,414.06

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Solution

The fourth proportional to 3,879.06, 5,820.14 and 1,414.06 is: 2,121.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.06 : 5,820.14 = 1,414.06 : x
  2. Step 2: Convert to fraction form
    3,879.06/5,820.14 = 1,414.06/x
  3. Step 3: Cross multiply
    3,879.06x = 5,820.14 × 1,414.06
  4. Step 4: Simplify right side
    3,879.06x = 8,230,027.17
  5. Step 5: Solve for x
    x = 8,230,027.17/3,879.06
  6. Step 6: Final answer
    x = 2,121.66

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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.