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Finding the Fourth Proportional to 3,992.56, 5,990.36 and 1,801.31

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Solution

The fourth proportional to 3,992.56, 5,990.36 and 1,801.31 is: 2,702.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.56 : 5,990.36 = 1,801.31 : x
  2. Step 2: Convert to fraction form
    3,992.56/5,990.36 = 1,801.31/x
  3. Step 3: Cross multiply
    3,992.56x = 5,990.36 × 1,801.31
  4. Step 4: Simplify right side
    3,992.56x = 10,790,456.41
  5. Step 5: Solve for x
    x = 10,790,456.41/3,992.56
  6. Step 6: Final answer
    x = 2,702.64

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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.