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Finding the Third Proportional to 3,774 and 8,638.50

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Solution

The third proportional to 3,774 and 8,638.50 is: 19,773.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,774 : 8,638.50 = 8,638.50 : x
  2. Step 2: Convert to fraction form
    3,774/8,638.50 = 8,638.50/x
  3. Step 3: Cross multiply
    3,774x = 8,638.50 × 8,638.50
  4. Step 4: Simplify right side
    3,774x = 74,623,682.25
  5. Step 5: Solve for x
    x = 74,623,682.25/3,774
  6. Step 6: Final answer
    x = 19,773.10

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Why These Related Problems?

These problems maintain the same ratio (2.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.