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Finding the Fourth Proportional to 6,879.20, 9,493.20 and 3,895.02

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Solution

The fourth proportional to 6,879.20, 9,493.20 and 3,895.02 is: 5,375.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,879.20 : 9,493.20 = 3,895.02 : x
  2. Step 2: Convert to fraction form
    6,879.20/9,493.20 = 3,895.02/x
  3. Step 3: Cross multiply
    6,879.20x = 9,493.20 × 3,895.02
  4. Step 4: Simplify right side
    6,879.20x = 36,976,203.86
  5. Step 5: Solve for x
    x = 36,976,203.86/6,879.20
  6. Step 6: Final answer
    x = 5,375.08

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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.