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Finding the Third Proportional to 5,370 and 12,357

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Solution

The third proportional to 5,370 and 12,357 is: 28,434.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,370 : 12,357 = 12,357 : x
  2. Step 2: Convert to fraction form
    5,370/12,357 = 12,357/x
  3. Step 3: Cross multiply
    5,370x = 12,357 × 12,357
  4. Step 4: Simplify right side
    5,370x = 152,695,449
  5. Step 5: Solve for x
    x = 152,695,449/5,370
  6. Step 6: Final answer
    x = 28,434.91

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.