Home / 7,172.20-10,743.18-3,279.88

Finding the Fourth Proportional to 7,172.20, 10,743.18 and 3,279.88

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Solution

The fourth proportional to 7,172.20, 10,743.18 and 3,279.88 is: 4,912.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.20 : 10,743.18 = 3,279.88 : x
  2. Step 2: Convert to fraction form
    7,172.20/10,743.18 = 3,279.88/x
  3. Step 3: Cross multiply
    7,172.20x = 10,743.18 × 3,279.88
  4. Step 4: Simplify right side
    7,172.20x = 35,236,341.22
  5. Step 5: Solve for x
    x = 35,236,341.22/7,172.20
  6. Step 6: Final answer
    x = 4,912.91

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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.