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Finding the Fourth Proportional to 4,067.88, 6,101.84 and 989.88

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Solution

The fourth proportional to 4,067.88, 6,101.84 and 989.88 is: 1,484.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,067.88 : 6,101.84 = 989.88 : x
  2. Step 2: Convert to fraction form
    4,067.88/6,101.84 = 989.88/x
  3. Step 3: Cross multiply
    4,067.88x = 6,101.84 × 989.88
  4. Step 4: Simplify right side
    4,067.88x = 6,040,089.38
  5. Step 5: Solve for x
    x = 6,040,089.38/4,067.88
  6. Step 6: Final answer
    x = 1,484.82

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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.