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Finding the Fourth Proportional to 3,761.84, 5,644.20 and 1,813.88

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Solution

The fourth proportional to 3,761.84, 5,644.20 and 1,813.88 is: 2,721.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.84 : 5,644.20 = 1,813.88 : x
  2. Step 2: Convert to fraction form
    3,761.84/5,644.20 = 1,813.88/x
  3. Step 3: Cross multiply
    3,761.84x = 5,644.20 × 1,813.88
  4. Step 4: Simplify right side
    3,761.84x = 10,237,901.50
  5. Step 5: Solve for x
    x = 10,237,901.50/3,761.84
  6. Step 6: Final answer
    x = 2,721.51

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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.