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Finding the Third Proportional to 1,872 and 4,176

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Solution

The third proportional to 1,872 and 4,176 is: 9,315.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872 : 4,176 = 4,176 : x
  2. Step 2: Convert to fraction form
    1,872/4,176 = 4,176/x
  3. Step 3: Cross multiply
    1,872x = 4,176 × 4,176
  4. Step 4: Simplify right side
    1,872x = 17,438,976
  5. Step 5: Solve for x
    x = 17,438,976/1,872
  6. Step 6: Final answer
    x = 9,315.69

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.