Home / 3,940.28-5,911.92-1,476.20

Finding the Fourth Proportional to 3,940.28, 5,911.92 and 1,476.20

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Solution

The fourth proportional to 3,940.28, 5,911.92 and 1,476.20 is: 2,214.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.28 : 5,911.92 = 1,476.20 : x
  2. Step 2: Convert to fraction form
    3,940.28/5,911.92 = 1,476.20/x
  3. Step 3: Cross multiply
    3,940.28x = 5,911.92 × 1,476.20
  4. Step 4: Simplify right side
    3,940.28x = 8,727,176.30
  5. Step 5: Solve for x
    x = 8,727,176.30/3,940.28
  6. Step 6: Final answer
    x = 2,214.86

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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.