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Finding the Fourth Proportional to 6,963.93, 9,609.87 and 3,979.38

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Solution

The fourth proportional to 6,963.93, 9,609.87 and 3,979.38 is: 5,491.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,963.93 : 9,609.87 = 3,979.38 : x
  2. Step 2: Convert to fraction form
    6,963.93/9,609.87 = 3,979.38/x
  3. Step 3: Cross multiply
    6,963.93x = 9,609.87 × 3,979.38
  4. Step 4: Simplify right side
    6,963.93x = 38,241,324.48
  5. Step 5: Solve for x
    x = 38,241,324.48/6,963.93
  6. Step 6: Final answer
    x = 5,491.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.