Home / 2,799.10-4,197.90-850.78

Finding the Fourth Proportional to 2,799.10, 4,197.90 and 850.78

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Solution

The fourth proportional to 2,799.10, 4,197.90 and 850.78 is: 1,275.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.10 : 4,197.90 = 850.78 : x
  2. Step 2: Convert to fraction form
    2,799.10/4,197.90 = 850.78/x
  3. Step 3: Cross multiply
    2,799.10x = 4,197.90 × 850.78
  4. Step 4: Simplify right side
    2,799.10x = 3,571,489.36
  5. Step 5: Solve for x
    x = 3,571,489.36/2,799.10
  6. Step 6: Final answer
    x = 1,275.94

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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.