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Finding the Fourth Proportional to 4,057.88, 6,086.82 and 979.88

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Solution

The fourth proportional to 4,057.88, 6,086.82 and 979.88 is: 1,469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,057.88 : 6,086.82 = 979.88 : x
  2. Step 2: Convert to fraction form
    4,057.88/6,086.82 = 979.88/x
  3. Step 3: Cross multiply
    4,057.88x = 6,086.82 × 979.88
  4. Step 4: Simplify right side
    4,057.88x = 5,964,322.75
  5. Step 5: Solve for x
    x = 5,964,322.75/4,057.88
  6. Step 6: Final answer
    x = 1,469.81

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Similar ratio
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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.