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Finding the Fourth Proportional to 3,871.74, 5,809.08 and 1,792.74

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Solution

The fourth proportional to 3,871.74, 5,809.08 and 1,792.74 is: 2,689.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.74 : 5,809.08 = 1,792.74 : x
  2. Step 2: Convert to fraction form
    3,871.74/5,809.08 = 1,792.74/x
  3. Step 3: Cross multiply
    3,871.74x = 5,809.08 × 1,792.74
  4. Step 4: Simplify right side
    3,871.74x = 10,414,170.08
  5. Step 5: Solve for x
    x = 10,414,170.08/3,871.74
  6. Step 6: Final answer
    x = 2,689.79

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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.