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Finding the Fourth Proportional to 6,642.42, 9,963.63 and 3,169.14

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Solution

The fourth proportional to 6,642.42, 9,963.63 and 3,169.14 is: 4,753.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642.42 : 9,963.63 = 3,169.14 : x
  2. Step 2: Convert to fraction form
    6,642.42/9,963.63 = 3,169.14/x
  3. Step 3: Cross multiply
    6,642.42x = 9,963.63 × 3,169.14
  4. Step 4: Simplify right side
    6,642.42x = 31,576,138.38
  5. Step 5: Solve for x
    x = 31,576,138.38/6,642.42
  6. Step 6: Final answer
    x = 4,753.71

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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.