Home / 2,274.26-3,138.60-1,279.61

Finding the Fourth Proportional to 2,274.26, 3,138.60 and 1,279.61

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Solution

The fourth proportional to 2,274.26, 3,138.60 and 1,279.61 is: 1,765.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,274.26 : 3,138.60 = 1,279.61 : x
  2. Step 2: Convert to fraction form
    2,274.26/3,138.60 = 1,279.61/x
  3. Step 3: Cross multiply
    2,274.26x = 3,138.60 × 1,279.61
  4. Step 4: Simplify right side
    2,274.26x = 4,016,168.25
  5. Step 5: Solve for x
    x = 4,016,168.25/2,274.26
  6. Step 6: Final answer
    x = 1,765.93

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1.5x scale

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.