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Finding the Fourth Proportional to 2,791.88, 3,852.79 and 1,549.88

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Solution

The fourth proportional to 2,791.88, 3,852.79 and 1,549.88 is: 2,138.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.88 : 3,852.79 = 1,549.88 : x
  2. Step 2: Convert to fraction form
    2,791.88/3,852.79 = 1,549.88/x
  3. Step 3: Cross multiply
    2,791.88x = 3,852.79 × 1,549.88
  4. Step 4: Simplify right side
    2,791.88x = 5,971,339.03
  5. Step 5: Solve for x
    x = 5,971,339.03/2,791.88
  6. Step 6: Final answer
    x = 2,138.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.