Home / 6,861.88-9,470.95-3,879.44

Finding the Fourth Proportional to 6,861.88, 9,470.95 and 3,879.44

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Solution

The fourth proportional to 6,861.88, 9,470.95 and 3,879.44 is: 5,354.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,861.88 : 9,470.95 = 3,879.44 : x
  2. Step 2: Convert to fraction form
    6,861.88/9,470.95 = 3,879.44/x
  3. Step 3: Cross multiply
    6,861.88x = 9,470.95 × 3,879.44
  4. Step 4: Simplify right side
    6,861.88x = 36,741,996.25
  5. Step 5: Solve for x
    x = 36,741,996.25/6,861.88
  6. Step 6: Final answer
    x = 5,354.51

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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.