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Finding the Third Proportional to 3,618 and 5,426

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Solution

The third proportional to 3,618 and 5,426 is: 8,137.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618 : 5,426 = 5,426 : x
  2. Step 2: Convert to fraction form
    3,618/5,426 = 5,426/x
  3. Step 3: Cross multiply
    3,618x = 5,426 × 5,426
  4. Step 4: Simplify right side
    3,618x = 29,441,476
  5. Step 5: Solve for x
    x = 29,441,476/3,618
  6. Step 6: Final answer
    x = 8,137.50

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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.