Home / 7,961.42-11,939.30-3,281.24

Finding the Fourth Proportional to 7,961.42, 11,939.30 and 3,281.24

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Solution

The fourth proportional to 7,961.42, 11,939.30 and 3,281.24 is: 4,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.42 : 11,939.30 = 3,281.24 : x
  2. Step 2: Convert to fraction form
    7,961.42/11,939.30 = 3,281.24/x
  3. Step 3: Cross multiply
    7,961.42x = 11,939.30 × 3,281.24
  4. Step 4: Simplify right side
    7,961.42x = 39,175,708.73
  5. Step 5: Solve for x
    x = 39,175,708.73/7,961.42
  6. Step 6: Final answer
    x = 4,920.69

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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.