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Finding the Third Proportional to 5,309 and 7,425

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Solution

The third proportional to 5,309 and 7,425 is: 10,384.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309 : 7,425 = 7,425 : x
  2. Step 2: Convert to fraction form
    5,309/7,425 = 7,425/x
  3. Step 3: Cross multiply
    5,309x = 7,425 × 7,425
  4. Step 4: Simplify right side
    5,309x = 55,130,625
  5. Step 5: Solve for x
    x = 55,130,625/5,309
  6. Step 6: Final answer
    x = 10,384.37

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.