Home / 2,279.75-3,147.56-2,122.77

Finding the Fourth Proportional to 2,279.75, 3,147.56 and 2,122.77

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Solution

The fourth proportional to 2,279.75, 3,147.56 and 2,122.77 is: 2,930.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.75 : 3,147.56 = 2,122.77 : x
  2. Step 2: Convert to fraction form
    2,279.75/3,147.56 = 2,122.77/x
  3. Step 3: Cross multiply
    2,279.75x = 3,147.56 × 2,122.77
  4. Step 4: Simplify right side
    2,279.75x = 6,681,530.20
  5. Step 5: Solve for x
    x = 6,681,530.20/2,279.75
  6. Step 6: Final answer
    x = 2,930.82

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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.