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Finding the Fourth Proportional to 2,353.11, 3,529.91 and 872.73

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Solution

The fourth proportional to 2,353.11, 3,529.91 and 872.73 is: 1,309.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,353.11 : 3,529.91 = 872.73 : x
  2. Step 2: Convert to fraction form
    2,353.11/3,529.91 = 872.73/x
  3. Step 3: Cross multiply
    2,353.11x = 3,529.91 × 872.73
  4. Step 4: Simplify right side
    2,353.11x = 3,080,658.35
  5. Step 5: Solve for x
    x = 3,080,658.35/2,353.11
  6. Step 6: Final answer
    x = 1,309.19

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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.