Home / 2,872.78-3,964.34-1,755.59

Finding the Fourth Proportional to 2,872.78, 3,964.34 and 1,755.59

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Solution

The fourth proportional to 2,872.78, 3,964.34 and 1,755.59 is: 2,422.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.78 : 3,964.34 = 1,755.59 : x
  2. Step 2: Convert to fraction form
    2,872.78/3,964.34 = 1,755.59/x
  3. Step 3: Cross multiply
    2,872.78x = 3,964.34 × 1,755.59
  4. Step 4: Simplify right side
    2,872.78x = 6,959,755.66
  5. Step 5: Solve for x
    x = 6,959,755.66/2,872.78
  6. Step 6: Final answer
    x = 2,422.66

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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.