Home / 5,274.28-7,276.80-3,149.20

Finding the Fourth Proportional to 5,274.28, 7,276.80 and 3,149.20

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Solution

The fourth proportional to 5,274.28, 7,276.80 and 3,149.20 is: 4,344.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.28 : 7,276.80 = 3,149.20 : x
  2. Step 2: Convert to fraction form
    5,274.28/7,276.80 = 3,149.20/x
  3. Step 3: Cross multiply
    5,274.28x = 7,276.80 × 3,149.20
  4. Step 4: Simplify right side
    5,274.28x = 22,916,098.56
  5. Step 5: Solve for x
    x = 22,916,098.56/5,274.28
  6. Step 6: Final answer
    x = 4,344.88

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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.