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Finding the Fourth Proportional to 6,620.32, 9,932 and 1,940.22

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Solution

The fourth proportional to 6,620.32, 9,932 and 1,940.22 is: 2,910.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.32 : 9,932 = 1,940.22 : x
  2. Step 2: Convert to fraction form
    6,620.32/9,932 = 1,940.22/x
  3. Step 3: Cross multiply
    6,620.32x = 9,932 × 1,940.22
  4. Step 4: Simplify right side
    6,620.32x = 19,270,265.04
  5. Step 5: Solve for x
    x = 19,270,265.04/6,620.32
  6. Step 6: Final answer
    x = 2,910.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.