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Finding the Fourth Proportional to 1,839.21, 2,759.28 and 852.73

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Solution

The fourth proportional to 1,839.21, 2,759.28 and 852.73 is: 1,279.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,839.21 : 2,759.28 = 852.73 : x
  2. Step 2: Convert to fraction form
    1,839.21/2,759.28 = 852.73/x
  3. Step 3: Cross multiply
    1,839.21x = 2,759.28 × 852.73
  4. Step 4: Simplify right side
    1,839.21x = 2,352,920.83
  5. Step 5: Solve for x
    x = 2,352,920.83/1,839.21
  6. Step 6: Final answer
    x = 1,279.31

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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.