Home / 3,990.54-5,979.21-2,040.06

Finding the Fourth Proportional to 3,990.54, 5,979.21 and 2,040.06

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Solution

The fourth proportional to 3,990.54, 5,979.21 and 2,040.06 is: 3,056.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.54 : 5,979.21 = 2,040.06 : x
  2. Step 2: Convert to fraction form
    3,990.54/5,979.21 = 2,040.06/x
  3. Step 3: Cross multiply
    3,990.54x = 5,979.21 × 2,040.06
  4. Step 4: Simplify right side
    3,990.54x = 12,197,947.15
  5. Step 5: Solve for x
    x = 12,197,947.15/3,990.54
  6. Step 6: Final answer
    x = 3,056.72

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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.