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Finding the Fourth Proportional to 2,691.82, 4,037.72 and 744.02

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Solution

The fourth proportional to 2,691.82, 4,037.72 and 744.02 is: 1,116.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.82 : 4,037.72 = 744.02 : x
  2. Step 2: Convert to fraction form
    2,691.82/4,037.72 = 744.02/x
  3. Step 3: Cross multiply
    2,691.82x = 4,037.72 × 744.02
  4. Step 4: Simplify right side
    2,691.82x = 3,004,146.29
  5. Step 5: Solve for x
    x = 3,004,146.29/2,691.82
  6. Step 6: Final answer
    x = 1,116.03

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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.