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Finding the Third Proportional to 5,426 and 7,019

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Solution

The third proportional to 5,426 and 7,019 is: 9,079.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426 : 7,019 = 7,019 : x
  2. Step 2: Convert to fraction form
    5,426/7,019 = 7,019/x
  3. Step 3: Cross multiply
    5,426x = 7,019 × 7,019
  4. Step 4: Simplify right side
    5,426x = 49,266,361
  5. Step 5: Solve for x
    x = 49,266,361/5,426
  6. Step 6: Final answer
    x = 9,079.68

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.