Home / 3,186.76-4,399.87-2,439.38

Finding the Fourth Proportional to 3,186.76, 4,399.87 and 2,439.38

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Solution

The fourth proportional to 3,186.76, 4,399.87 and 2,439.38 is: 3,367.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.76 : 4,399.87 = 2,439.38 : x
  2. Step 2: Convert to fraction form
    3,186.76/4,399.87 = 2,439.38/x
  3. Step 3: Cross multiply
    3,186.76x = 4,399.87 × 2,439.38
  4. Step 4: Simplify right side
    3,186.76x = 10,732,964.36
  5. Step 5: Solve for x
    x = 10,732,964.36/3,186.76
  6. Step 6: Final answer
    x = 3,367.99

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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.