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Finding the Fourth Proportional to 2,221.97, 3,333.24 and 761.22

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Solution

The fourth proportional to 2,221.97, 3,333.24 and 761.22 is: 1,141.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.97 : 3,333.24 = 761.22 : x
  2. Step 2: Convert to fraction form
    2,221.97/3,333.24 = 761.22/x
  3. Step 3: Cross multiply
    2,221.97x = 3,333.24 × 761.22
  4. Step 4: Simplify right side
    2,221.97x = 2,537,328.95
  5. Step 5: Solve for x
    x = 2,537,328.95/2,221.97
  6. Step 6: Final answer
    x = 1,141.93

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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.