Home / 2,619.81-3,930.99-1,233.09

Finding the Fourth Proportional to 2,619.81, 3,930.99 and 1,233.09

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Solution

The fourth proportional to 2,619.81, 3,930.99 and 1,233.09 is: 1,850.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.81 : 3,930.99 = 1,233.09 : x
  2. Step 2: Convert to fraction form
    2,619.81/3,930.99 = 1,233.09/x
  3. Step 3: Cross multiply
    2,619.81x = 3,930.99 × 1,233.09
  4. Step 4: Simplify right side
    2,619.81x = 4,847,264.46
  5. Step 5: Solve for x
    x = 4,847,264.46/2,619.81
  6. Step 6: Final answer
    x = 1,850.24

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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.