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Finding the Fourth Proportional to 2,516.66, 3,775.52 and 761.80

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Solution

The fourth proportional to 2,516.66, 3,775.52 and 761.80 is: 1,142.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,516.66 : 3,775.52 = 761.80 : x
  2. Step 2: Convert to fraction form
    2,516.66/3,775.52 = 761.80/x
  3. Step 3: Cross multiply
    2,516.66x = 3,775.52 × 761.80
  4. Step 4: Simplify right side
    2,516.66x = 2,876,191.14
  5. Step 5: Solve for x
    x = 2,876,191.14/2,516.66
  6. Step 6: Final answer
    x = 1,142.86

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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.