Home / 3,854.20-5,776.44-1,905.88

Finding the Fourth Proportional to 3,854.20, 5,776.44 and 1,905.88

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Solution

The fourth proportional to 3,854.20, 5,776.44 and 1,905.88 is: 2,856.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,854.20 : 5,776.44 = 1,905.88 : x
  2. Step 2: Convert to fraction form
    3,854.20/5,776.44 = 1,905.88/x
  3. Step 3: Cross multiply
    3,854.20x = 5,776.44 × 1,905.88
  4. Step 4: Simplify right side
    3,854.20x = 11,009,201.47
  5. Step 5: Solve for x
    x = 11,009,201.47/3,854.20
  6. Step 6: Final answer
    x = 2,856.42

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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.