Home / 2,274.29-3,138.26-1,279.55

Finding the Fourth Proportional to 2,274.29, 3,138.26 and 1,279.55

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Solution

The fourth proportional to 2,274.29, 3,138.26 and 1,279.55 is: 1,765.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,274.29 : 3,138.26 = 1,279.55 : x
  2. Step 2: Convert to fraction form
    2,274.29/3,138.26 = 1,279.55/x
  3. Step 3: Cross multiply
    2,274.29x = 3,138.26 × 1,279.55
  4. Step 4: Simplify right side
    2,274.29x = 4,015,548.09
  5. Step 5: Solve for x
    x = 4,015,548.09/2,274.29
  6. Step 6: Final answer
    x = 1,765.63

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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.