Home / 3,838.20-5,299.22-2,777.78

Finding the Fourth Proportional to 3,838.20, 5,299.22 and 2,777.78

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Solution

The fourth proportional to 3,838.20, 5,299.22 and 2,777.78 is: 3,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838.20 : 5,299.22 = 2,777.78 : x
  2. Step 2: Convert to fraction form
    3,838.20/5,299.22 = 2,777.78/x
  3. Step 3: Cross multiply
    3,838.20x = 5,299.22 × 2,777.78
  4. Step 4: Simplify right side
    3,838.20x = 14,720,067.33
  5. Step 5: Solve for x
    x = 14,720,067.33/3,838.20
  6. Step 6: Final answer
    x = 3,835.15

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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.