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Finding the Fourth Proportional to 2,201.88, 3,300.48 and 814.32

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Solution

The fourth proportional to 2,201.88, 3,300.48 and 814.32 is: 1,220.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,201.88 : 3,300.48 = 814.32 : x
  2. Step 2: Convert to fraction form
    2,201.88/3,300.48 = 814.32/x
  3. Step 3: Cross multiply
    2,201.88x = 3,300.48 × 814.32
  4. Step 4: Simplify right side
    2,201.88x = 2,687,646.87
  5. Step 5: Solve for x
    x = 2,687,646.87/2,201.88
  6. Step 6: Final answer
    x = 1,220.61

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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.