Home / 2,186.40-3,278.64-799.29

Finding the Fourth Proportional to 2,186.40, 3,278.64 and 799.29

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Solution

The fourth proportional to 2,186.40, 3,278.64 and 799.29 is: 1,198.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.40 : 3,278.64 = 799.29 : x
  2. Step 2: Convert to fraction form
    2,186.40/3,278.64 = 799.29/x
  3. Step 3: Cross multiply
    2,186.40x = 3,278.64 × 799.29
  4. Step 4: Simplify right side
    2,186.40x = 2,620,584.17
  5. Step 5: Solve for x
    x = 2,620,584.17/2,186.40
  6. Step 6: Final answer
    x = 1,198.58

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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.