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Finding the Third Proportional to 5,629 and 8,261

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Solution

The third proportional to 5,629 and 8,261 is: 12,123.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,629 : 8,261 = 8,261 : x
  2. Step 2: Convert to fraction form
    5,629/8,261 = 8,261/x
  3. Step 3: Cross multiply
    5,629x = 8,261 × 8,261
  4. Step 4: Simplify right side
    5,629x = 68,244,121
  5. Step 5: Solve for x
    x = 68,244,121/5,629
  6. Step 6: Final answer
    x = 12,123.67

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.