Home / 2,251.90-3,107.55-1,257.16

Finding the Fourth Proportional to 2,251.90, 3,107.55 and 1,257.16

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Solution

The fourth proportional to 2,251.90, 3,107.55 and 1,257.16 is: 1,734.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.90 : 3,107.55 = 1,257.16 : x
  2. Step 2: Convert to fraction form
    2,251.90/3,107.55 = 1,257.16/x
  3. Step 3: Cross multiply
    2,251.90x = 3,107.55 × 1,257.16
  4. Step 4: Simplify right side
    2,251.90x = 3,906,687.56
  5. Step 5: Solve for x
    x = 3,906,687.56/2,251.90
  6. Step 6: Final answer
    x = 1,734.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.