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Finding the Third Proportional to 3,988 and 7,340

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Solution

The third proportional to 3,988 and 7,340 is: 13,509.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988 : 7,340 = 7,340 : x
  2. Step 2: Convert to fraction form
    3,988/7,340 = 7,340/x
  3. Step 3: Cross multiply
    3,988x = 7,340 × 7,340
  4. Step 4: Simplify right side
    3,988x = 53,875,600
  5. Step 5: Solve for x
    x = 53,875,600/3,988
  6. Step 6: Final answer
    x = 13,509.43

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.