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Finding the Fourth Proportional to 3,990.79, 5,979.98 and 1,524.27

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Solution

The fourth proportional to 3,990.79, 5,979.98 and 1,524.27 is: 2,284.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.79 : 5,979.98 = 1,524.27 : x
  2. Step 2: Convert to fraction form
    3,990.79/5,979.98 = 1,524.27/x
  3. Step 3: Cross multiply
    3,990.79x = 5,979.98 × 1,524.27
  4. Step 4: Simplify right side
    3,990.79x = 9,115,074.21
  5. Step 5: Solve for x
    x = 9,115,074.21/3,990.79
  6. Step 6: Final answer
    x = 2,284.03

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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.