Home / 6,863.76-9,470.96-3,879.57

Finding the Fourth Proportional to 6,863.76, 9,470.96 and 3,879.57

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Solution

The fourth proportional to 6,863.76, 9,470.96 and 3,879.57 is: 5,353.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,863.76 : 9,470.96 = 3,879.57 : x
  2. Step 2: Convert to fraction form
    6,863.76/9,470.96 = 3,879.57/x
  3. Step 3: Cross multiply
    6,863.76x = 9,470.96 × 3,879.57
  4. Step 4: Simplify right side
    6,863.76x = 36,743,252.29
  5. Step 5: Solve for x
    x = 36,743,252.29/6,863.76
  6. Step 6: Final answer
    x = 5,353.23

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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.