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Finding the Third Proportional to 3,392 and 3,712

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Solution

The third proportional to 3,392 and 3,712 is: 4,062.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392 : 3,712 = 3,712 : x
  2. Step 2: Convert to fraction form
    3,392/3,712 = 3,712/x
  3. Step 3: Cross multiply
    3,392x = 3,712 × 3,712
  4. Step 4: Simplify right side
    3,392x = 13,778,944
  5. Step 5: Solve for x
    x = 13,778,944/3,392
  6. Step 6: Final answer
    x = 4,062.19

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.