Home / 2,619.30-3,930.30-1,159.44

Finding the Fourth Proportional to 2,619.30, 3,930.30 and 1,159.44

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Solution

The fourth proportional to 2,619.30, 3,930.30 and 1,159.44 is: 1,739.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.30 : 3,930.30 = 1,159.44 : x
  2. Step 2: Convert to fraction form
    2,619.30/3,930.30 = 1,159.44/x
  3. Step 3: Cross multiply
    2,619.30x = 3,930.30 × 1,159.44
  4. Step 4: Simplify right side
    2,619.30x = 4,556,947.03
  5. Step 5: Solve for x
    x = 4,556,947.03/2,619.30
  6. Step 6: Final answer
    x = 1,739.76

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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.