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Finding the Fourth Proportional to 2,753.70, 4,131.16 and 879.56

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Solution

The fourth proportional to 2,753.70, 4,131.16 and 879.56 is: 1,319.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.70 : 4,131.16 = 879.56 : x
  2. Step 2: Convert to fraction form
    2,753.70/4,131.16 = 879.56/x
  3. Step 3: Cross multiply
    2,753.70x = 4,131.16 × 879.56
  4. Step 4: Simplify right side
    2,753.70x = 3,633,603.09
  5. Step 5: Solve for x
    x = 3,633,603.09/2,753.70
  6. Step 6: Final answer
    x = 1,319.53

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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.