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Finding the Third Proportional to 7,639 and 10,185

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Solution

The third proportional to 7,639 and 10,185 is: 13,579.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639 : 10,185 = 10,185 : x
  2. Step 2: Convert to fraction form
    7,639/10,185 = 10,185/x
  3. Step 3: Cross multiply
    7,639x = 10,185 × 10,185
  4. Step 4: Simplify right side
    7,639x = 103,734,225
  5. Step 5: Solve for x
    x = 103,734,225/7,639
  6. Step 6: Final answer
    x = 13,579.56

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.