Home / 2,991.42-4,489.92-1,531.62

Finding the Fourth Proportional to 2,991.42, 4,489.92 and 1,531.62

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Solution

The fourth proportional to 2,991.42, 4,489.92 and 1,531.62 is: 2,298.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.42 : 4,489.92 = 1,531.62 : x
  2. Step 2: Convert to fraction form
    2,991.42/4,489.92 = 1,531.62/x
  3. Step 3: Cross multiply
    2,991.42x = 4,489.92 × 1,531.62
  4. Step 4: Simplify right side
    2,991.42x = 6,876,851.27
  5. Step 5: Solve for x
    x = 6,876,851.27/2,991.42
  6. Step 6: Final answer
    x = 2,298.86

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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.