Home / 3,991.25-5,986.89-1,359.02

Finding the Fourth Proportional to 3,991.25, 5,986.89 and 1,359.02

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Solution

The fourth proportional to 3,991.25, 5,986.89 and 1,359.02 is: 2,038.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.25 : 5,986.89 = 1,359.02 : x
  2. Step 2: Convert to fraction form
    3,991.25/5,986.89 = 1,359.02/x
  3. Step 3: Cross multiply
    3,991.25x = 5,986.89 × 1,359.02
  4. Step 4: Simplify right side
    3,991.25x = 8,136,318.22
  5. Step 5: Solve for x
    x = 8,136,318.22/3,991.25
  6. Step 6: Final answer
    x = 2,038.54

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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.