Home / 2,251.70-3,107.40-1,257.02

Finding the Fourth Proportional to 2,251.70, 3,107.40 and 1,257.02

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Solution

The fourth proportional to 2,251.70, 3,107.40 and 1,257.02 is: 1,734.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.70 : 3,107.40 = 1,257.02 : x
  2. Step 2: Convert to fraction form
    2,251.70/3,107.40 = 1,257.02/x
  3. Step 3: Cross multiply
    2,251.70x = 3,107.40 × 1,257.02
  4. Step 4: Simplify right side
    2,251.70x = 3,906,063.95
  5. Step 5: Solve for x
    x = 3,906,063.95/2,251.70
  6. Step 6: Final answer
    x = 1,734.72

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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.