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Finding the Third Proportional to 6,390 and 9,790.88

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Solution

The third proportional to 6,390 and 9,790.88 is: 15,001.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390 : 9,790.88 = 9,790.88 : x
  2. Step 2: Convert to fraction form
    6,390/9,790.88 = 9,790.88/x
  3. Step 3: Cross multiply
    6,390x = 9,790.88 × 9,790.88
  4. Step 4: Simplify right side
    6,390x = 95,861,233.27
  5. Step 5: Solve for x
    x = 95,861,233.27/6,390
  6. Step 6: Final answer
    x = 15,001.76

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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.