Home / 2,639.10-3,960.59-1,252.43

Finding the Fourth Proportional to 2,639.10, 3,960.59 and 1,252.43

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Solution

The fourth proportional to 2,639.10, 3,960.59 and 1,252.43 is: 1,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.10 : 3,960.59 = 1,252.43 : x
  2. Step 2: Convert to fraction form
    2,639.10/3,960.59 = 1,252.43/x
  3. Step 3: Cross multiply
    2,639.10x = 3,960.59 × 1,252.43
  4. Step 4: Simplify right side
    2,639.10x = 4,960,361.73
  5. Step 5: Solve for x
    x = 4,960,361.73/2,639.10
  6. Step 6: Final answer
    x = 1,879.57

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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.