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Finding the Fourth Proportional to 6,868.63, 9,479.19 and 3,884.49

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Solution

The fourth proportional to 6,868.63, 9,479.19 and 3,884.49 is: 5,360.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,868.63 : 9,479.19 = 3,884.49 : x
  2. Step 2: Convert to fraction form
    6,868.63/9,479.19 = 3,884.49/x
  3. Step 3: Cross multiply
    6,868.63x = 9,479.19 × 3,884.49
  4. Step 4: Simplify right side
    6,868.63x = 36,821,833.33
  5. Step 5: Solve for x
    x = 36,821,833.33/6,868.63
  6. Step 6: Final answer
    x = 5,360.87

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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.