Home / 3,979.41-5,972.76-2,106.96

Finding the Fourth Proportional to 3,979.41, 5,972.76 and 2,106.96

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Solution

The fourth proportional to 3,979.41, 5,972.76 and 2,106.96 is: 3,162.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.41 : 5,972.76 = 2,106.96 : x
  2. Step 2: Convert to fraction form
    3,979.41/5,972.76 = 2,106.96/x
  3. Step 3: Cross multiply
    3,979.41x = 5,972.76 × 2,106.96
  4. Step 4: Simplify right side
    3,979.41x = 12,584,366.41
  5. Step 5: Solve for x
    x = 12,584,366.41/3,979.41
  6. Step 6: Final answer
    x = 3,162.37

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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.