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Finding the Third Proportional to 4,047 and 8,579

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Solution

The third proportional to 4,047 and 8,579 is: 18,186.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,047 : 8,579 = 8,579 : x
  2. Step 2: Convert to fraction form
    4,047/8,579 = 8,579/x
  3. Step 3: Cross multiply
    4,047x = 8,579 × 8,579
  4. Step 4: Simplify right side
    4,047x = 73,599,241
  5. Step 5: Solve for x
    x = 73,599,241/4,047
  6. Step 6: Final answer
    x = 18,186.12

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.