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Finding the Third Proportional to 6,360 and 9,900

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Solution

The third proportional to 6,360 and 9,900 is: 15,410.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,360 : 9,900 = 9,900 : x
  2. Step 2: Convert to fraction form
    6,360/9,900 = 9,900/x
  3. Step 3: Cross multiply
    6,360x = 9,900 × 9,900
  4. Step 4: Simplify right side
    6,360x = 98,010,000
  5. Step 5: Solve for x
    x = 98,010,000/6,360
  6. Step 6: Final answer
    x = 15,410.38

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.