Home / 4,919.21-6,791.92-3,979.14

Finding the Fourth Proportional to 4,919.21, 6,791.92 and 3,979.14

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Solution

The fourth proportional to 4,919.21, 6,791.92 and 3,979.14 is: 5,493.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.21 : 6,791.92 = 3,979.14 : x
  2. Step 2: Convert to fraction form
    4,919.21/6,791.92 = 3,979.14/x
  3. Step 3: Cross multiply
    4,919.21x = 6,791.92 × 3,979.14
  4. Step 4: Simplify right side
    4,919.21x = 27,026,013.47
  5. Step 5: Solve for x
    x = 27,026,013.47/4,919.21
  6. Step 6: Final answer
    x = 5,493.97

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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.