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Finding the Third Proportional to 15,784 and 34,680

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Solution

The third proportional to 15,784 and 34,680 is: 76,197.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,784 : 34,680 = 34,680 : x
  2. Step 2: Convert to fraction form
    15,784/34,680 = 34,680/x
  3. Step 3: Cross multiply
    15,784x = 34,680 × 34,680
  4. Step 4: Simplify right side
    15,784x = 1,202,702,400
  5. Step 5: Solve for x
    x = 1,202,702,400/15,784
  6. Step 6: Final answer
    x = 76,197.57

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.