Home / 3,991.39-5,990.77-2,018.41

Finding the Fourth Proportional to 3,991.39, 5,990.77 and 2,018.41

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Solution

The fourth proportional to 3,991.39, 5,990.77 and 2,018.41 is: 3,029.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.39 : 5,990.77 = 2,018.41 : x
  2. Step 2: Convert to fraction form
    3,991.39/5,990.77 = 2,018.41/x
  3. Step 3: Cross multiply
    3,991.39x = 5,990.77 × 2,018.41
  4. Step 4: Simplify right side
    3,991.39x = 12,091,800.12
  5. Step 5: Solve for x
    x = 12,091,800.12/3,991.39
  6. Step 6: Final answer
    x = 3,029.47

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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.