Home / 2,771.28-3,819.09-1,983.96

Finding the Fourth Proportional to 2,771.28, 3,819.09 and 1,983.96

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Solution

The fourth proportional to 2,771.28, 3,819.09 and 1,983.96 is: 2,734.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.28 : 3,819.09 = 1,983.96 : x
  2. Step 2: Convert to fraction form
    2,771.28/3,819.09 = 1,983.96/x
  3. Step 3: Cross multiply
    2,771.28x = 3,819.09 × 1,983.96
  4. Step 4: Simplify right side
    2,771.28x = 7,576,921.80
  5. Step 5: Solve for x
    x = 7,576,921.80/2,771.28
  6. Step 6: Final answer
    x = 2,734.09

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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.