Home / 2,771.70-4,149.78-2,512.20

Finding the Fourth Proportional to 2,771.70, 4,149.78 and 2,512.20

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Solution

The fourth proportional to 2,771.70, 4,149.78 and 2,512.20 is: 3,761.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.70 : 4,149.78 = 2,512.20 : x
  2. Step 2: Convert to fraction form
    2,771.70/4,149.78 = 2,512.20/x
  3. Step 3: Cross multiply
    2,771.70x = 4,149.78 × 2,512.20
  4. Step 4: Simplify right side
    2,771.70x = 10,425,077.32
  5. Step 5: Solve for x
    x = 10,425,077.32/2,771.70
  6. Step 6: Final answer
    x = 3,761.26

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1.5x scale

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.