Home / 2,782.17-4,174.97-1,138.73

Finding the Fourth Proportional to 2,782.17, 4,174.97 and 1,138.73

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Solution

The fourth proportional to 2,782.17, 4,174.97 and 1,138.73 is: 1,708.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.17 : 4,174.97 = 1,138.73 : x
  2. Step 2: Convert to fraction form
    2,782.17/4,174.97 = 1,138.73/x
  3. Step 3: Cross multiply
    2,782.17x = 4,174.97 × 1,138.73
  4. Step 4: Simplify right side
    2,782.17x = 4,754,137.02
  5. Step 5: Solve for x
    x = 4,754,137.02/2,782.17
  6. Step 6: Final answer
    x = 1,708.79

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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.