Home / 3,979.41-5,971.13-1,787.68

Finding the Fourth Proportional to 3,979.41, 5,971.13 and 1,787.68

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Solution

The fourth proportional to 3,979.41, 5,971.13 and 1,787.68 is: 2,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.41 : 5,971.13 = 1,787.68 : x
  2. Step 2: Convert to fraction form
    3,979.41/5,971.13 = 1,787.68/x
  3. Step 3: Cross multiply
    3,979.41x = 5,971.13 × 1,787.68
  4. Step 4: Simplify right side
    3,979.41x = 10,674,469.68
  5. Step 5: Solve for x
    x = 10,674,469.68/3,979.41
  6. Step 6: Final answer
    x = 2,682.43

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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.