Home / 3,826.96-5,745.76-1,979.44

Finding the Fourth Proportional to 3,826.96, 5,745.76 and 1,979.44

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Solution

The fourth proportional to 3,826.96, 5,745.76 and 1,979.44 is: 2,971.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.96 : 5,745.76 = 1,979.44 : x
  2. Step 2: Convert to fraction form
    3,826.96/5,745.76 = 1,979.44/x
  3. Step 3: Cross multiply
    3,826.96x = 5,745.76 × 1,979.44
  4. Step 4: Simplify right side
    3,826.96x = 11,373,387.17
  5. Step 5: Solve for x
    x = 11,373,387.17/3,826.96
  6. Step 6: Final answer
    x = 2,971.91

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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.