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Finding the Third Proportional to 7,078 and 14,390

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Solution

The third proportional to 7,078 and 14,390 is: 29,255.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078 : 14,390 = 14,390 : x
  2. Step 2: Convert to fraction form
    7,078/14,390 = 14,390/x
  3. Step 3: Cross multiply
    7,078x = 14,390 × 14,390
  4. Step 4: Simplify right side
    7,078x = 207,072,100
  5. Step 5: Solve for x
    x = 207,072,100/7,078
  6. Step 6: Final answer
    x = 29,255.74

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.