Home / 2,120.58-3,175.74-1,144.26

Finding the Fourth Proportional to 2,120.58, 3,175.74 and 1,144.26

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Solution

The fourth proportional to 2,120.58, 3,175.74 and 1,144.26 is: 1,713.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.58 : 3,175.74 = 1,144.26 : x
  2. Step 2: Convert to fraction form
    2,120.58/3,175.74 = 1,144.26/x
  3. Step 3: Cross multiply
    2,120.58x = 3,175.74 × 1,144.26
  4. Step 4: Simplify right side
    2,120.58x = 3,633,872.25
  5. Step 5: Solve for x
    x = 3,633,872.25/2,120.58
  6. Step 6: Final answer
    x = 1,713.62

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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.