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Finding the Fourth Proportional to 2,511.34, 3,766.82 and 779.92

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Solution

The fourth proportional to 2,511.34, 3,766.82 and 779.92 is: 1,169.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,511.34 : 3,766.82 = 779.92 : x
  2. Step 2: Convert to fraction form
    2,511.34/3,766.82 = 779.92/x
  3. Step 3: Cross multiply
    2,511.34x = 3,766.82 × 779.92
  4. Step 4: Simplify right side
    2,511.34x = 2,937,818.25
  5. Step 5: Solve for x
    x = 2,937,818.25/2,511.34
  6. Step 6: Final answer
    x = 1,169.82

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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.