Home / 3,856.14-5,780.09-2,005.39

Finding the Fourth Proportional to 3,856.14, 5,780.09 and 2,005.39

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Solution

The fourth proportional to 3,856.14, 5,780.09 and 2,005.39 is: 3,005.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.14 : 5,780.09 = 2,005.39 : x
  2. Step 2: Convert to fraction form
    3,856.14/5,780.09 = 2,005.39/x
  3. Step 3: Cross multiply
    3,856.14x = 5,780.09 × 2,005.39
  4. Step 4: Simplify right side
    3,856.14x = 11,591,346.92
  5. Step 5: Solve for x
    x = 11,591,346.92/3,856.14
  6. Step 6: Final answer
    x = 3,005.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.