Home / 3,081.16-4,621.40-1,231.80

Finding the Fourth Proportional to 3,081.16, 4,621.40 and 1,231.80

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Solution

The fourth proportional to 3,081.16, 4,621.40 and 1,231.80 is: 1,847.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.16 : 4,621.40 = 1,231.80 : x
  2. Step 2: Convert to fraction form
    3,081.16/4,621.40 = 1,231.80/x
  3. Step 3: Cross multiply
    3,081.16x = 4,621.40 × 1,231.80
  4. Step 4: Simplify right side
    3,081.16x = 5,692,640.52
  5. Step 5: Solve for x
    x = 5,692,640.52/3,081.16
  6. Step 6: Final answer
    x = 1,847.56

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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.