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Finding the Fourth Proportional to 6,722.80, 10,080.60 and 2,822.80

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Solution

The fourth proportional to 6,722.80, 10,080.60 and 2,822.80 is: 4,232.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,722.80 : 10,080.60 = 2,822.80 : x
  2. Step 2: Convert to fraction form
    6,722.80/10,080.60 = 2,822.80/x
  3. Step 3: Cross multiply
    6,722.80x = 10,080.60 × 2,822.80
  4. Step 4: Simplify right side
    6,722.80x = 28,455,517.68
  5. Step 5: Solve for x
    x = 28,455,517.68/6,722.80
  6. Step 6: Final answer
    x = 4,232.69

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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.