Home / 3,913.52-5,390.96-3,027.78

Finding the Fourth Proportional to 3,913.52, 5,390.96 and 3,027.78

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Solution

The fourth proportional to 3,913.52, 5,390.96 and 3,027.78 is: 4,170.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.52 : 5,390.96 = 3,027.78 : x
  2. Step 2: Convert to fraction form
    3,913.52/5,390.96 = 3,027.78/x
  3. Step 3: Cross multiply
    3,913.52x = 5,390.96 × 3,027.78
  4. Step 4: Simplify right side
    3,913.52x = 16,322,625.73
  5. Step 5: Solve for x
    x = 16,322,625.73/3,913.52
  6. Step 6: Final answer
    x = 4,170.84

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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.