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Finding the Third Proportional to 7,400 and 14,560

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Solution

The third proportional to 7,400 and 14,560 is: 28,647.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,400 : 14,560 = 14,560 : x
  2. Step 2: Convert to fraction form
    7,400/14,560 = 14,560/x
  3. Step 3: Cross multiply
    7,400x = 14,560 × 14,560
  4. Step 4: Simplify right side
    7,400x = 211,993,600
  5. Step 5: Solve for x
    x = 211,993,600/7,400
  6. Step 6: Final answer
    x = 28,647.78

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.