Home / 2,179.09-3,268.32-792.78

Finding the Fourth Proportional to 2,179.09, 3,268.32 and 792.78

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Solution

The fourth proportional to 2,179.09, 3,268.32 and 792.78 is: 1,189.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.09 : 3,268.32 = 792.78 : x
  2. Step 2: Convert to fraction form
    2,179.09/3,268.32 = 792.78/x
  3. Step 3: Cross multiply
    2,179.09x = 3,268.32 × 792.78
  4. Step 4: Simplify right side
    2,179.09x = 2,591,058.73
  5. Step 5: Solve for x
    x = 2,591,058.73/2,179.09
  6. Step 6: Final answer
    x = 1,189.06

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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.