Home / 2,986.80-4,481.81-1,231.53

Finding the Fourth Proportional to 2,986.80, 4,481.81 and 1,231.53

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Solution

The fourth proportional to 2,986.80, 4,481.81 and 1,231.53 is: 1,847.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.80 : 4,481.81 = 1,231.53 : x
  2. Step 2: Convert to fraction form
    2,986.80/4,481.81 = 1,231.53/x
  3. Step 3: Cross multiply
    2,986.80x = 4,481.81 × 1,231.53
  4. Step 4: Simplify right side
    2,986.80x = 5,519,483.47
  5. Step 5: Solve for x
    x = 5,519,483.47/2,986.80
  6. Step 6: Final answer
    x = 1,847.96

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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.