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Finding the Third Proportional to 1,098 and 2,340

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Solution

The third proportional to 1,098 and 2,340 is: 4,986.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098 : 2,340 = 2,340 : x
  2. Step 2: Convert to fraction form
    1,098/2,340 = 2,340/x
  3. Step 3: Cross multiply
    1,098x = 2,340 × 2,340
  4. Step 4: Simplify right side
    1,098x = 5,475,600
  5. Step 5: Solve for x
    x = 5,475,600/1,098
  6. Step 6: Final answer
    x = 4,986.89

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.