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Finding the Third Proportional to 6,080 and 12,640

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Solution

The third proportional to 6,080 and 12,640 is: 26,277.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,080 : 12,640 = 12,640 : x
  2. Step 2: Convert to fraction form
    6,080/12,640 = 12,640/x
  3. Step 3: Cross multiply
    6,080x = 12,640 × 12,640
  4. Step 4: Simplify right side
    6,080x = 159,769,600
  5. Step 5: Solve for x
    x = 159,769,600/6,080
  6. Step 6: Final answer
    x = 26,277.89

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.