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Finding the Fourth Proportional to 6,879.30, 9,493.26 and 3,895.42

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Solution

The fourth proportional to 6,879.30, 9,493.26 and 3,895.42 is: 5,375.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,879.30 : 9,493.26 = 3,895.42 : x
  2. Step 2: Convert to fraction form
    6,879.30/9,493.26 = 3,895.42/x
  3. Step 3: Cross multiply
    6,879.30x = 9,493.26 × 3,895.42
  4. Step 4: Simplify right side
    6,879.30x = 36,980,232.13
  5. Step 5: Solve for x
    x = 36,980,232.13/6,879.30
  6. Step 6: Final answer
    x = 5,375.58

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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.