Home / 6,879.20-9,491.69-3,894.37

Finding the Fourth Proportional to 6,879.20, 9,491.69 and 3,894.37

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Solution

The fourth proportional to 6,879.20, 9,491.69 and 3,894.37 is: 5,373.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,879.20 : 9,491.69 = 3,894.37 : x
  2. Step 2: Convert to fraction form
    6,879.20/9,491.69 = 3,894.37/x
  3. Step 3: Cross multiply
    6,879.20x = 9,491.69 × 3,894.37
  4. Step 4: Simplify right side
    6,879.20x = 36,964,138.79
  5. Step 5: Solve for x
    x = 36,964,138.79/6,879.20
  6. Step 6: Final answer
    x = 5,373.32

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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.