Home / 2,626.11-3,929.92-1,639.39

Finding the Fourth Proportional to 2,626.11, 3,929.92 and 1,639.39

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Solution

The fourth proportional to 2,626.11, 3,929.92 and 1,639.39 is: 2,453.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,626.11 : 3,929.92 = 1,639.39 : x
  2. Step 2: Convert to fraction form
    2,626.11/3,929.92 = 1,639.39/x
  3. Step 3: Cross multiply
    2,626.11x = 3,929.92 × 1,639.39
  4. Step 4: Simplify right side
    2,626.11x = 6,442,671.55
  5. Step 5: Solve for x
    x = 6,442,671.55/2,626.11
  6. Step 6: Final answer
    x = 2,453.31

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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.