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Finding the Fourth Proportional to 2,659.62, 3,991.49 and 1,839.09

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Solution

The fourth proportional to 2,659.62, 3,991.49 and 1,839.09 is: 2,760.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,659.62 : 3,991.49 = 1,839.09 : x
  2. Step 2: Convert to fraction form
    2,659.62/3,991.49 = 1,839.09/x
  3. Step 3: Cross multiply
    2,659.62x = 3,991.49 × 1,839.09
  4. Step 4: Simplify right side
    2,659.62x = 7,340,709.34
  5. Step 5: Solve for x
    x = 7,340,709.34/2,659.62
  6. Step 6: Final answer
    x = 2,760.06

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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.