Home / 2,850.74-3,930.92-1,854.17

Finding the Fourth Proportional to 2,850.74, 3,930.92 and 1,854.17

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Solution

The fourth proportional to 2,850.74, 3,930.92 and 1,854.17 is: 2,556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.74 : 3,930.92 = 1,854.17 : x
  2. Step 2: Convert to fraction form
    2,850.74/3,930.92 = 1,854.17/x
  3. Step 3: Cross multiply
    2,850.74x = 3,930.92 × 1,854.17
  4. Step 4: Simplify right side
    2,850.74x = 7,288,593.94
  5. Step 5: Solve for x
    x = 7,288,593.94/2,850.74
  6. Step 6: Final answer
    x = 2,556.74

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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.