Home / 2,109.71-3,161.33-1,012.97

Finding the Fourth Proportional to 2,109.71, 3,161.33 and 1,012.97

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Solution

The fourth proportional to 2,109.71, 3,161.33 and 1,012.97 is: 1,517.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.71 : 3,161.33 = 1,012.97 : x
  2. Step 2: Convert to fraction form
    2,109.71/3,161.33 = 1,012.97/x
  3. Step 3: Cross multiply
    2,109.71x = 3,161.33 × 1,012.97
  4. Step 4: Simplify right side
    2,109.71x = 3,202,339.09
  5. Step 5: Solve for x
    x = 3,202,339.09/2,109.71
  6. Step 6: Final answer
    x = 1,517.90

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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.