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Finding the Third Proportional to 827.72 and 1,803.09

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Solution

The third proportional to 827.72 and 1,803.09 is: 3,927.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.72 : 1,803.09 = 1,803.09 : x
  2. Step 2: Convert to fraction form
    827.72/1,803.09 = 1,803.09/x
  3. Step 3: Cross multiply
    827.72x = 1,803.09 × 1,803.09
  4. Step 4: Simplify right side
    827.72x = 3,251,147.07
  5. Step 5: Solve for x
    x = 3,251,147.07/827.72
  6. Step 6: Final answer
    x = 3,927.84

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.