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Finding the Third Proportional to 3,942 and 6,187.50

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Solution

The third proportional to 3,942 and 6,187.50 is: 9,712.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942 : 6,187.50 = 6,187.50 : x
  2. Step 2: Convert to fraction form
    3,942/6,187.50 = 6,187.50/x
  3. Step 3: Cross multiply
    3,942x = 6,187.50 × 6,187.50
  4. Step 4: Simplify right side
    3,942x = 38,285,156.25
  5. Step 5: Solve for x
    x = 38,285,156.25/3,942
  6. Step 6: Final answer
    x = 9,712.11

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.