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Finding the Third Proportional to 5,678 and 8,613

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Solution

The third proportional to 5,678 and 8,613 is: 13,065.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678 : 8,613 = 8,613 : x
  2. Step 2: Convert to fraction form
    5,678/8,613 = 8,613/x
  3. Step 3: Cross multiply
    5,678x = 8,613 × 8,613
  4. Step 4: Simplify right side
    5,678x = 74,183,769
  5. Step 5: Solve for x
    x = 74,183,769/5,678
  6. Step 6: Final answer
    x = 13,065.12

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.