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Finding the Third Proportional to 938.46 and 1,674.42

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Solution

The third proportional to 938.46 and 1,674.42 is: 2,987.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.46 : 1,674.42 = 1,674.42 : x
  2. Step 2: Convert to fraction form
    938.46/1,674.42 = 1,674.42/x
  3. Step 3: Cross multiply
    938.46x = 1,674.42 × 1,674.42
  4. Step 4: Simplify right side
    938.46x = 2,803,688.62
  5. Step 5: Solve for x
    x = 2,803,688.62/938.46
  6. Step 6: Final answer
    x = 2,987.54

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.