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Finding the Fourth Proportional to 2,803.22, 4,204.77 and 723.20

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Solution

The fourth proportional to 2,803.22, 4,204.77 and 723.20 is: 1,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.22 : 4,204.77 = 723.20 : x
  2. Step 2: Convert to fraction form
    2,803.22/4,204.77 = 723.20/x
  3. Step 3: Cross multiply
    2,803.22x = 4,204.77 × 723.20
  4. Step 4: Simplify right side
    2,803.22x = 3,040,889.66
  5. Step 5: Solve for x
    x = 3,040,889.66/2,803.22
  6. Step 6: Final answer
    x = 1,084.78

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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.