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Finding the Fourth Proportional to 6,641.40, 9,963.39 and 2,198.88

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Solution

The fourth proportional to 6,641.40, 9,963.39 and 2,198.88 is: 3,298.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.40 : 9,963.39 = 2,198.88 : x
  2. Step 2: Convert to fraction form
    6,641.40/9,963.39 = 2,198.88/x
  3. Step 3: Cross multiply
    6,641.40x = 9,963.39 × 2,198.88
  4. Step 4: Simplify right side
    6,641.40x = 21,908,299.00
  5. Step 5: Solve for x
    x = 21,908,299.00/6,641.40
  6. Step 6: Final answer
    x = 3,298.75

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1.5x scale

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.