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Finding the Third Proportional to 822.88 and 1,782.38

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Solution

The third proportional to 822.88 and 1,782.38 is: 3,860.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.88 : 1,782.38 = 1,782.38 : x
  2. Step 2: Convert to fraction form
    822.88/1,782.38 = 1,782.38/x
  3. Step 3: Cross multiply
    822.88x = 1,782.38 × 1,782.38
  4. Step 4: Simplify right side
    822.88x = 3,176,860.64
  5. Step 5: Solve for x
    x = 3,176,860.64/822.88
  6. Step 6: Final answer
    x = 3,860.68

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.