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Finding the Third Proportional to 3,179.78 and 4,674.41

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Solution

The third proportional to 3,179.78 and 4,674.41 is: 6,871.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.78 : 4,674.41 = 4,674.41 : x
  2. Step 2: Convert to fraction form
    3,179.78/4,674.41 = 4,674.41/x
  3. Step 3: Cross multiply
    3,179.78x = 4,674.41 × 4,674.41
  4. Step 4: Simplify right side
    3,179.78x = 21,850,089.77
  5. Step 5: Solve for x
    x = 21,850,089.77/3,179.78
  6. Step 6: Final answer
    x = 6,871.56

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.