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Finding the Third Proportional to 7,281 and 11,171.25

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Solution

The third proportional to 7,281 and 11,171.25 is: 17,140.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281 : 11,171.25 = 11,171.25 : x
  2. Step 2: Convert to fraction form
    7,281/11,171.25 = 11,171.25/x
  3. Step 3: Cross multiply
    7,281x = 11,171.25 × 11,171.25
  4. Step 4: Simplify right side
    7,281x = 124,796,826.56
  5. Step 5: Solve for x
    x = 124,796,826.56/7,281
  6. Step 6: Final answer
    x = 17,140.07

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.