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Finding the Third Proportional to 7,122.75 and 10,407.75

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Solution

The third proportional to 7,122.75 and 10,407.75 is: 15,207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.75 : 10,407.75 = 10,407.75 : x
  2. Step 2: Convert to fraction form
    7,122.75/10,407.75 = 10,407.75/x
  3. Step 3: Cross multiply
    7,122.75x = 10,407.75 × 10,407.75
  4. Step 4: Simplify right side
    7,122.75x = 108,321,260.06
  5. Step 5: Solve for x
    x = 108,321,260.06/7,122.75
  6. Step 6: Final answer
    x = 15,207.79

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.