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Finding the Fourth Proportional to 2,236.57, 3,354.75 and 775.83

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Solution

The fourth proportional to 2,236.57, 3,354.75 and 775.83 is: 1,163.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,236.57 : 3,354.75 = 775.83 : x
  2. Step 2: Convert to fraction form
    2,236.57/3,354.75 = 775.83/x
  3. Step 3: Cross multiply
    2,236.57x = 3,354.75 × 775.83
  4. Step 4: Simplify right side
    2,236.57x = 2,602,715.69
  5. Step 5: Solve for x
    x = 2,602,715.69/2,236.57
  6. Step 6: Final answer
    x = 1,163.71

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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.