Home / 2,778.28-3,826.82-1,937.48

Finding the Fourth Proportional to 2,778.28, 3,826.82 and 1,937.48

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Solution

The fourth proportional to 2,778.28, 3,826.82 and 1,937.48 is: 2,668.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.28 : 3,826.82 = 1,937.48 : x
  2. Step 2: Convert to fraction form
    2,778.28/3,826.82 = 1,937.48/x
  3. Step 3: Cross multiply
    2,778.28x = 3,826.82 × 1,937.48
  4. Step 4: Simplify right side
    2,778.28x = 7,414,372.92
  5. Step 5: Solve for x
    x = 7,414,372.92/2,778.28
  6. Step 6: Final answer
    x = 2,668.69

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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.