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Finding the Fourth Proportional to 2,201.63, 3,300.11 and 814.07

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Solution

The fourth proportional to 2,201.63, 3,300.11 and 814.07 is: 1,220.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,201.63 : 3,300.11 = 814.07 : x
  2. Step 2: Convert to fraction form
    2,201.63/3,300.11 = 814.07/x
  3. Step 3: Cross multiply
    2,201.63x = 3,300.11 × 814.07
  4. Step 4: Simplify right side
    2,201.63x = 2,686,520.55
  5. Step 5: Solve for x
    x = 2,686,520.55/2,201.63
  6. Step 6: Final answer
    x = 1,220.24

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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.