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Finding the Third Proportional to 3,630 and 5,613

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Solution

The third proportional to 3,630 and 5,613 is: 8,679.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630 : 5,613 = 5,613 : x
  2. Step 2: Convert to fraction form
    3,630/5,613 = 5,613/x
  3. Step 3: Cross multiply
    3,630x = 5,613 × 5,613
  4. Step 4: Simplify right side
    3,630x = 31,505,769
  5. Step 5: Solve for x
    x = 31,505,769/3,630
  6. Step 6: Final answer
    x = 8,679.28

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.