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Finding the Third Proportional to 3,080 and 4,678

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Solution

The third proportional to 3,080 and 4,678 is: 7,105.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080 : 4,678 = 4,678 : x
  2. Step 2: Convert to fraction form
    3,080/4,678 = 4,678/x
  3. Step 3: Cross multiply
    3,080x = 4,678 × 4,678
  4. Step 4: Simplify right side
    3,080x = 21,883,684
  5. Step 5: Solve for x
    x = 21,883,684/3,080
  6. Step 6: Final answer
    x = 7,105.09

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.