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Finding the Third Proportional to 7,857 and 16,587

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Solution

The third proportional to 7,857 and 16,587 is: 35,017

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857 : 16,587 = 16,587 : x
  2. Step 2: Convert to fraction form
    7,857/16,587 = 16,587/x
  3. Step 3: Cross multiply
    7,857x = 16,587 × 16,587
  4. Step 4: Simplify right side
    7,857x = 275,128,569
  5. Step 5: Solve for x
    x = 275,128,569/7,857
  6. Step 6: Final answer
    x = 35,017

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.