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Finding the Fourth Proportional to 7,274.88, 10,912.68 and 2,080.80

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Solution

The fourth proportional to 7,274.88, 10,912.68 and 2,080.80 is: 3,121.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,274.88 : 10,912.68 = 2,080.80 : x
  2. Step 2: Convert to fraction form
    7,274.88/10,912.68 = 2,080.80/x
  3. Step 3: Cross multiply
    7,274.88x = 10,912.68 × 2,080.80
  4. Step 4: Simplify right side
    7,274.88x = 22,707,104.54
  5. Step 5: Solve for x
    x = 22,707,104.54/7,274.88
  6. Step 6: Final answer
    x = 3,121.30

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1.5x scale

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.