Home / 5,979.81-8,255.85-3,856.38

Finding the Fourth Proportional to 5,979.81, 8,255.85 and 3,856.38

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Solution

The fourth proportional to 5,979.81, 8,255.85 and 3,856.38 is: 5,324.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,979.81 : 8,255.85 = 3,856.38 : x
  2. Step 2: Convert to fraction form
    5,979.81/8,255.85 = 3,856.38/x
  3. Step 3: Cross multiply
    5,979.81x = 8,255.85 × 3,856.38
  4. Step 4: Simplify right side
    5,979.81x = 31,837,694.82
  5. Step 5: Solve for x
    x = 31,837,694.82/5,979.81
  6. Step 6: Final answer
    x = 5,324.20

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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.