Home / 6,986.12-9,640.87-3,961.73

Finding the Fourth Proportional to 6,986.12, 9,640.87 and 3,961.73

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Solution

The fourth proportional to 6,986.12, 9,640.87 and 3,961.73 is: 5,467.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,986.12 : 9,640.87 = 3,961.73 : x
  2. Step 2: Convert to fraction form
    6,986.12/9,640.87 = 3,961.73/x
  3. Step 3: Cross multiply
    6,986.12x = 9,640.87 × 3,961.73
  4. Step 4: Simplify right side
    6,986.12x = 38,194,561.26
  5. Step 5: Solve for x
    x = 38,194,561.26/6,986.12
  6. Step 6: Final answer
    x = 5,467.21

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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.