Home / 2,850.78-3,934.16-1,591.79

Finding the Fourth Proportional to 2,850.78, 3,934.16 and 1,591.79

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Solution

The fourth proportional to 2,850.78, 3,934.16 and 1,591.79 is: 2,196.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.78 : 3,934.16 = 1,591.79 : x
  2. Step 2: Convert to fraction form
    2,850.78/3,934.16 = 1,591.79/x
  3. Step 3: Cross multiply
    2,850.78x = 3,934.16 × 1,591.79
  4. Step 4: Simplify right side
    2,850.78x = 6,262,356.55
  5. Step 5: Solve for x
    x = 6,262,356.55/2,850.78
  6. Step 6: Final answer
    x = 2,196.72

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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.