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Finding the Third Proportional to 7,950 and 17,490

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Solution

The third proportional to 7,950 and 17,490 is: 38,478

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,950 : 17,490 = 17,490 : x
  2. Step 2: Convert to fraction form
    7,950/17,490 = 17,490/x
  3. Step 3: Cross multiply
    7,950x = 17,490 × 17,490
  4. Step 4: Simplify right side
    7,950x = 305,900,100
  5. Step 5: Solve for x
    x = 305,900,100/7,950
  6. Step 6: Final answer
    x = 38,478

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.