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Finding the Fourth Proportional to 2,517.69, 3,775.06 and 762.17

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Solution

The fourth proportional to 2,517.69, 3,775.06 and 762.17 is: 1,142.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.69 : 3,775.06 = 762.17 : x
  2. Step 2: Convert to fraction form
    2,517.69/3,775.06 = 762.17/x
  3. Step 3: Cross multiply
    2,517.69x = 3,775.06 × 762.17
  4. Step 4: Simplify right side
    2,517.69x = 2,877,237.48
  5. Step 5: Solve for x
    x = 2,877,237.48/2,517.69
  6. Step 6: Final answer
    x = 1,142.81

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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.