Home / 3,778.88-5,219.52-2,729.28

Finding the Fourth Proportional to 3,778.88, 5,219.52 and 2,729.28

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Solution

The fourth proportional to 3,778.88, 5,219.52 and 2,729.28 is: 3,769.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.88 : 5,219.52 = 2,729.28 : x
  2. Step 2: Convert to fraction form
    3,778.88/5,219.52 = 2,729.28/x
  3. Step 3: Cross multiply
    3,778.88x = 5,219.52 × 2,729.28
  4. Step 4: Simplify right side
    3,778.88x = 14,245,531.55
  5. Step 5: Solve for x
    x = 14,245,531.55/3,778.88
  6. Step 6: Final answer
    x = 3,769.78

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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.