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Finding the Third Proportional to 7,390 and 11,443

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Solution

The third proportional to 7,390 and 11,443 is: 17,718.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390 : 11,443 = 11,443 : x
  2. Step 2: Convert to fraction form
    7,390/11,443 = 11,443/x
  3. Step 3: Cross multiply
    7,390x = 11,443 × 11,443
  4. Step 4: Simplify right side
    7,390x = 130,942,249
  5. Step 5: Solve for x
    x = 130,942,249/7,390
  6. Step 6: Final answer
    x = 17,718.84

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.