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Finding the Fourth Proportional to 5,991.77, 8,990.70 and 4,039.88

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Solution

The fourth proportional to 5,991.77, 8,990.70 and 4,039.88 is: 6,061.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,991.77 : 8,990.70 = 4,039.88 : x
  2. Step 2: Convert to fraction form
    5,991.77/8,990.70 = 4,039.88/x
  3. Step 3: Cross multiply
    5,991.77x = 8,990.70 × 4,039.88
  4. Step 4: Simplify right side
    5,991.77x = 36,321,289.01
  5. Step 5: Solve for x
    x = 36,321,289.01/5,991.77
  6. Step 6: Final answer
    x = 6,061.86

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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.