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Finding the Third Proportional to 7,618 and 11,426

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Solution

The third proportional to 7,618 and 11,426 is: 17,137.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,618 : 11,426 = 11,426 : x
  2. Step 2: Convert to fraction form
    7,618/11,426 = 11,426/x
  3. Step 3: Cross multiply
    7,618x = 11,426 × 11,426
  4. Step 4: Simplify right side
    7,618x = 130,553,476
  5. Step 5: Solve for x
    x = 130,553,476/7,618
  6. Step 6: Final answer
    x = 17,137.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.