Home / 2,120.26-3,179.17-1,775.74

Finding the Fourth Proportional to 2,120.26, 3,179.17 and 1,775.74

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Solution

The fourth proportional to 2,120.26, 3,179.17 and 1,775.74 is: 2,662.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.26 : 3,179.17 = 1,775.74 : x
  2. Step 2: Convert to fraction form
    2,120.26/3,179.17 = 1,775.74/x
  3. Step 3: Cross multiply
    2,120.26x = 3,179.17 × 1,775.74
  4. Step 4: Simplify right side
    2,120.26x = 5,645,379.34
  5. Step 5: Solve for x
    x = 5,645,379.34/2,120.26
  6. Step 6: Final answer
    x = 2,662.59

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1.5x scale

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.