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Finding the Fourth Proportional to 2,581.07, 3,871.02 and 731.77

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Solution

The fourth proportional to 2,581.07, 3,871.02 and 731.77 is: 1,097.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.07 : 3,871.02 = 731.77 : x
  2. Step 2: Convert to fraction form
    2,581.07/3,871.02 = 731.77/x
  3. Step 3: Cross multiply
    2,581.07x = 3,871.02 × 731.77
  4. Step 4: Simplify right side
    2,581.07x = 2,832,689.37
  5. Step 5: Solve for x
    x = 2,832,689.37/2,581.07
  6. Step 6: Final answer
    x = 1,097.49

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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.