Home / 2,620.26-3,929.55-1,159.38

Finding the Fourth Proportional to 2,620.26, 3,929.55 and 1,159.38

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Solution

The fourth proportional to 2,620.26, 3,929.55 and 1,159.38 is: 1,738.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.26 : 3,929.55 = 1,159.38 : x
  2. Step 2: Convert to fraction form
    2,620.26/3,929.55 = 1,159.38/x
  3. Step 3: Cross multiply
    2,620.26x = 3,929.55 × 1,159.38
  4. Step 4: Simplify right side
    2,620.26x = 4,555,841.68
  5. Step 5: Solve for x
    x = 4,555,841.68/2,620.26
  6. Step 6: Final answer
    x = 1,738.70

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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.