Home / 2,274.90-3,138.60-1,279.96

Finding the Fourth Proportional to 2,274.90, 3,138.60 and 1,279.96

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Solution

The fourth proportional to 2,274.90, 3,138.60 and 1,279.96 is: 1,765.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,274.90 : 3,138.60 = 1,279.96 : x
  2. Step 2: Convert to fraction form
    2,274.90/3,138.60 = 1,279.96/x
  3. Step 3: Cross multiply
    2,274.90x = 3,138.60 × 1,279.96
  4. Step 4: Simplify right side
    2,274.90x = 4,017,282.46
  5. Step 5: Solve for x
    x = 4,017,282.46/2,274.90
  6. Step 6: Final answer
    x = 1,765.92

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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.