Home / 2,619.12-3,930.18-1,059.84

Finding the Fourth Proportional to 2,619.12, 3,930.18 and 1,059.84

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Solution

The fourth proportional to 2,619.12, 3,930.18 and 1,059.84 is: 1,590.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.12 : 3,930.18 = 1,059.84 : x
  2. Step 2: Convert to fraction form
    2,619.12/3,930.18 = 1,059.84/x
  3. Step 3: Cross multiply
    2,619.12x = 3,930.18 × 1,059.84
  4. Step 4: Simplify right side
    2,619.12x = 4,165,361.97
  5. Step 5: Solve for x
    x = 4,165,361.97/2,619.12
  6. Step 6: Final answer
    x = 1,590.37

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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.