Home / 3,991.26-5,989.63-1,394.20

Finding the Fourth Proportional to 3,991.26, 5,989.63 and 1,394.20

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Solution

The fourth proportional to 3,991.26, 5,989.63 and 1,394.20 is: 2,092.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.26 : 5,989.63 = 1,394.20 : x
  2. Step 2: Convert to fraction form
    3,991.26/5,989.63 = 1,394.20/x
  3. Step 3: Cross multiply
    3,991.26x = 5,989.63 × 1,394.20
  4. Step 4: Simplify right side
    3,991.26x = 8,350,742.15
  5. Step 5: Solve for x
    x = 8,350,742.15/3,991.26
  6. Step 6: Final answer
    x = 2,092.26

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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.