Home / 3,979.55-5,967.70-1,787.69

Finding the Fourth Proportional to 3,979.55, 5,967.70 and 1,787.69

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Solution

The fourth proportional to 3,979.55, 5,967.70 and 1,787.69 is: 2,680.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.55 : 5,967.70 = 1,787.69 : x
  2. Step 2: Convert to fraction form
    3,979.55/5,967.70 = 1,787.69/x
  3. Step 3: Cross multiply
    3,979.55x = 5,967.70 × 1,787.69
  4. Step 4: Simplify right side
    3,979.55x = 10,668,397.61
  5. Step 5: Solve for x
    x = 10,668,397.61/3,979.55
  6. Step 6: Final answer
    x = 2,680.81

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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.