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Finding the Third Proportional to 3,718 and 5,309

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Solution

The third proportional to 3,718 and 5,309 is: 7,580.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718 : 5,309 = 5,309 : x
  2. Step 2: Convert to fraction form
    3,718/5,309 = 5,309/x
  3. Step 3: Cross multiply
    3,718x = 5,309 × 5,309
  4. Step 4: Simplify right side
    3,718x = 28,185,481
  5. Step 5: Solve for x
    x = 28,185,481/3,718
  6. Step 6: Final answer
    x = 7,580.82

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.