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Finding the Third Proportional to 3,390 and 4,873

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Solution

The third proportional to 3,390 and 4,873 is: 7,004.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390 : 4,873 = 4,873 : x
  2. Step 2: Convert to fraction form
    3,390/4,873 = 4,873/x
  3. Step 3: Cross multiply
    3,390x = 4,873 × 4,873
  4. Step 4: Simplify right side
    3,390x = 23,746,129
  5. Step 5: Solve for x
    x = 23,746,129/3,390
  6. Step 6: Final answer
    x = 7,004.76

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.