Home / 7,641.82-11,464.46-3,480.72

Finding the Fourth Proportional to 7,641.82, 11,464.46 and 3,480.72

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Solution

The fourth proportional to 7,641.82, 11,464.46 and 3,480.72 is: 5,221.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,641.82 : 11,464.46 = 3,480.72 : x
  2. Step 2: Convert to fraction form
    7,641.82/11,464.46 = 3,480.72/x
  3. Step 3: Cross multiply
    7,641.82x = 11,464.46 × 3,480.72
  4. Step 4: Simplify right side
    7,641.82x = 39,904,575.21
  5. Step 5: Solve for x
    x = 39,904,575.21/7,641.82
  6. Step 6: Final answer
    x = 5,221.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.