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Finding the Third Proportional to 2,618 and 6,413

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Solution

The third proportional to 2,618 and 6,413 is: 15,709.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618 : 6,413 = 6,413 : x
  2. Step 2: Convert to fraction form
    2,618/6,413 = 6,413/x
  3. Step 3: Cross multiply
    2,618x = 6,413 × 6,413
  4. Step 4: Simplify right side
    2,618x = 41,126,569
  5. Step 5: Solve for x
    x = 41,126,569/2,618
  6. Step 6: Final answer
    x = 15,709.16

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Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.