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Finding the Third Proportional to 886.78 and 1,929.66

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Solution

The third proportional to 886.78 and 1,929.66 is: 4,198.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.78 : 1,929.66 = 1,929.66 : x
  2. Step 2: Convert to fraction form
    886.78/1,929.66 = 1,929.66/x
  3. Step 3: Cross multiply
    886.78x = 1,929.66 × 1,929.66
  4. Step 4: Simplify right side
    886.78x = 3,723,573.24
  5. Step 5: Solve for x
    x = 3,723,573.24/886.78
  6. Step 6: Final answer
    x = 4,198.98

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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.