Home / 3,991.37-5,989.73-1,394.31

Finding the Fourth Proportional to 3,991.37, 5,989.73 and 1,394.31

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Solution

The fourth proportional to 3,991.37, 5,989.73 and 1,394.31 is: 2,092.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.37 : 5,989.73 = 1,394.31 : x
  2. Step 2: Convert to fraction form
    3,991.37/5,989.73 = 1,394.31/x
  3. Step 3: Cross multiply
    3,991.37x = 5,989.73 × 1,394.31
  4. Step 4: Simplify right side
    3,991.37x = 8,351,533.46
  5. Step 5: Solve for x
    x = 8,351,533.46/3,991.37
  6. Step 6: Final answer
    x = 2,092.40

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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.