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Finding the Fourth Proportional to 6,639.75, 9,959.63 and 2,022.75

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Solution

The fourth proportional to 6,639.75, 9,959.63 and 2,022.75 is: 3,034.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.75 : 9,959.63 = 2,022.75 : x
  2. Step 2: Convert to fraction form
    6,639.75/9,959.63 = 2,022.75/x
  3. Step 3: Cross multiply
    6,639.75x = 9,959.63 × 2,022.75
  4. Step 4: Simplify right side
    6,639.75x = 20,145,841.58
  5. Step 5: Solve for x
    x = 20,145,841.58/6,639.75
  6. Step 6: Final answer
    x = 3,034.13

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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.