Home / 2,326.82-3,211-1,278.88

Finding the Fourth Proportional to 2,326.82, 3,211 and 1,278.88

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Solution

The fourth proportional to 2,326.82, 3,211 and 1,278.88 is: 1,764.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,326.82 : 3,211 = 1,278.88 : x
  2. Step 2: Convert to fraction form
    2,326.82/3,211 = 1,278.88/x
  3. Step 3: Cross multiply
    2,326.82x = 3,211 × 1,278.88
  4. Step 4: Simplify right side
    2,326.82x = 4,106,483.68
  5. Step 5: Solve for x
    x = 4,106,483.68/2,326.82
  6. Step 6: Final answer
    x = 1,764.85

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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.