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Finding the Fourth Proportional to 6,640.24, 9,958.82 and 1,960.56

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Solution

The fourth proportional to 6,640.24, 9,958.82 and 1,960.56 is: 2,940.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.24 : 9,958.82 = 1,960.56 : x
  2. Step 2: Convert to fraction form
    6,640.24/9,958.82 = 1,960.56/x
  3. Step 3: Cross multiply
    6,640.24x = 9,958.82 × 1,960.56
  4. Step 4: Simplify right side
    6,640.24x = 19,524,864.14
  5. Step 5: Solve for x
    x = 19,524,864.14/6,640.24
  6. Step 6: Final answer
    x = 2,940.39

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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.