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Finding the Third Proportional to 5,409 and 12,463.50

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Solution

The third proportional to 5,409 and 12,463.50 is: 28,718.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409 : 12,463.50 = 12,463.50 : x
  2. Step 2: Convert to fraction form
    5,409/12,463.50 = 12,463.50/x
  3. Step 3: Cross multiply
    5,409x = 12,463.50 × 12,463.50
  4. Step 4: Simplify right side
    5,409x = 155,338,832.25
  5. Step 5: Solve for x
    x = 155,338,832.25/5,409
  6. Step 6: Final answer
    x = 28,718.59

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.