Home / 2,640.32-3,959.57-1,252.71

Finding the Fourth Proportional to 2,640.32, 3,959.57 and 1,252.71

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Solution

The fourth proportional to 2,640.32, 3,959.57 and 1,252.71 is: 1,878.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.32 : 3,959.57 = 1,252.71 : x
  2. Step 2: Convert to fraction form
    2,640.32/3,959.57 = 1,252.71/x
  3. Step 3: Cross multiply
    2,640.32x = 3,959.57 × 1,252.71
  4. Step 4: Simplify right side
    2,640.32x = 4,960,201.52
  5. Step 5: Solve for x
    x = 4,960,201.52/2,640.32
  6. Step 6: Final answer
    x = 1,878.64

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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.