Home / 3,081.06-4,621.66-1,438.79

Finding the Fourth Proportional to 3,081.06, 4,621.66 and 1,438.79

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Solution

The fourth proportional to 3,081.06, 4,621.66 and 1,438.79 is: 2,158.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.06 : 4,621.66 = 1,438.79 : x
  2. Step 2: Convert to fraction form
    3,081.06/4,621.66 = 1,438.79/x
  3. Step 3: Cross multiply
    3,081.06x = 4,621.66 × 1,438.79
  4. Step 4: Simplify right side
    3,081.06x = 6,649,571.49
  5. Step 5: Solve for x
    x = 6,649,571.49/3,081.06
  6. Step 6: Final answer
    x = 2,158.21

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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.