Home / 6,639.89-9,961.14-2,197.38

Finding the Fourth Proportional to 6,639.89, 9,961.14 and 2,197.38

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Solution

The fourth proportional to 6,639.89, 9,961.14 and 2,197.38 is: 3,296.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.89 : 9,961.14 = 2,197.38 : x
  2. Step 2: Convert to fraction form
    6,639.89/9,961.14 = 2,197.38/x
  3. Step 3: Cross multiply
    6,639.89x = 9,961.14 × 2,197.38
  4. Step 4: Simplify right side
    6,639.89x = 21,888,418.05
  5. Step 5: Solve for x
    x = 21,888,418.05/6,639.89
  6. Step 6: Final answer
    x = 3,296.50

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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.