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Finding the Third Proportional to 4,330 and 7,685

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Solution

The third proportional to 4,330 and 7,685 is: 13,639.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,330 : 7,685 = 7,685 : x
  2. Step 2: Convert to fraction form
    4,330/7,685 = 7,685/x
  3. Step 3: Cross multiply
    4,330x = 7,685 × 7,685
  4. Step 4: Simplify right side
    4,330x = 59,059,225
  5. Step 5: Solve for x
    x = 59,059,225/4,330
  6. Step 6: Final answer
    x = 13,639.54

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Why These Related Problems?

These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.