Home / 2,640.42-3,959.37-1,252.56

Finding the Fourth Proportional to 2,640.42, 3,959.37 and 1,252.56

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Solution

The fourth proportional to 2,640.42, 3,959.37 and 1,252.56 is: 1,878.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.42 : 3,959.37 = 1,252.56 : x
  2. Step 2: Convert to fraction form
    2,640.42/3,959.37 = 1,252.56/x
  3. Step 3: Cross multiply
    2,640.42x = 3,959.37 × 1,252.56
  4. Step 4: Simplify right side
    2,640.42x = 4,959,348.49
  5. Step 5: Solve for x
    x = 4,959,348.49/2,640.42
  6. Step 6: Final answer
    x = 1,878.24

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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.