Home / 2,619.36-3,930.39-1,159.55

Finding the Fourth Proportional to 2,619.36, 3,930.39 and 1,159.55

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Solution

The fourth proportional to 2,619.36, 3,930.39 and 1,159.55 is: 1,739.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.36 : 3,930.39 = 1,159.55 : x
  2. Step 2: Convert to fraction form
    2,619.36/3,930.39 = 1,159.55/x
  3. Step 3: Cross multiply
    2,619.36x = 3,930.39 × 1,159.55
  4. Step 4: Simplify right side
    2,619.36x = 4,557,464.07
  5. Step 5: Solve for x
    x = 4,557,464.07/2,619.36
  6. Step 6: Final answer
    x = 1,739.92

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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.