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Finding the Third Proportional to 7,200 and 14,208

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Solution

The third proportional to 7,200 and 14,208 is: 28,037.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200 : 14,208 = 14,208 : x
  2. Step 2: Convert to fraction form
    7,200/14,208 = 14,208/x
  3. Step 3: Cross multiply
    7,200x = 14,208 × 14,208
  4. Step 4: Simplify right side
    7,200x = 201,867,264
  5. Step 5: Solve for x
    x = 201,867,264/7,200
  6. Step 6: Final answer
    x = 28,037.12

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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.