Home / 7,105.20-9,804.96-3,961.92

Finding the Fourth Proportional to 7,105.20, 9,804.96 and 3,961.92

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Solution

The fourth proportional to 7,105.20, 9,804.96 and 3,961.92 is: 5,467.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,105.20 : 9,804.96 = 3,961.92 : x
  2. Step 2: Convert to fraction form
    7,105.20/9,804.96 = 3,961.92/x
  3. Step 3: Cross multiply
    7,105.20x = 9,804.96 × 3,961.92
  4. Step 4: Simplify right side
    7,105.20x = 38,846,467.12
  5. Step 5: Solve for x
    x = 38,846,467.12/7,105.20
  6. Step 6: Final answer
    x = 5,467.33

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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.