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Finding the Fourth Proportional to 6,642.59, 9,960.41 and 1,961.98

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Solution

The fourth proportional to 6,642.59, 9,960.41 and 1,961.98 is: 2,941.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642.59 : 9,960.41 = 1,961.98 : x
  2. Step 2: Convert to fraction form
    6,642.59/9,960.41 = 1,961.98/x
  3. Step 3: Cross multiply
    6,642.59x = 9,960.41 × 1,961.98
  4. Step 4: Simplify right side
    6,642.59x = 19,542,105.22
  5. Step 5: Solve for x
    x = 19,542,105.22/6,642.59
  6. Step 6: Final answer
    x = 2,941.94

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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.