Home / 2,511.90-3,761.92-1,276.55

Finding the Fourth Proportional to 2,511.90, 3,761.92 and 1,276.55

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Solution

The fourth proportional to 2,511.90, 3,761.92 and 1,276.55 is: 1,911.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,511.90 : 3,761.92 = 1,276.55 : x
  2. Step 2: Convert to fraction form
    2,511.90/3,761.92 = 1,276.55/x
  3. Step 3: Cross multiply
    2,511.90x = 3,761.92 × 1,276.55
  4. Step 4: Simplify right side
    2,511.90x = 4,802,278.98
  5. Step 5: Solve for x
    x = 4,802,278.98/2,511.90
  6. Step 6: Final answer
    x = 1,911.81

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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.