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Finding the Third Proportional to 5,070 and 7,121.25

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Solution

The third proportional to 5,070 and 7,121.25 is: 10,002.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,070 : 7,121.25 = 7,121.25 : x
  2. Step 2: Convert to fraction form
    5,070/7,121.25 = 7,121.25/x
  3. Step 3: Cross multiply
    5,070x = 7,121.25 × 7,121.25
  4. Step 4: Simplify right side
    5,070x = 50,712,201.56
  5. Step 5: Solve for x
    x = 50,712,201.56/5,070
  6. Step 6: Final answer
    x = 10,002.41

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.