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Finding the Fourth Proportional to 3,582.99, 5,374.82 and 1,391.88

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Solution

The fourth proportional to 3,582.99, 5,374.82 and 1,391.88 is: 2,087.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,582.99 : 5,374.82 = 1,391.88 : x
  2. Step 2: Convert to fraction form
    3,582.99/5,374.82 = 1,391.88/x
  3. Step 3: Cross multiply
    3,582.99x = 5,374.82 × 1,391.88
  4. Step 4: Simplify right side
    3,582.99x = 7,481,122.88
  5. Step 5: Solve for x
    x = 7,481,122.88/3,582.99
  6. Step 6: Final answer
    x = 2,087.96

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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.