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Finding the Fourth Proportional to 3,187.52, 4,398 and 1,945.52

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Solution

The fourth proportional to 3,187.52, 4,398 and 1,945.52 is: 2,684.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.52 : 4,398 = 1,945.52 : x
  2. Step 2: Convert to fraction form
    3,187.52/4,398 = 1,945.52/x
  3. Step 3: Cross multiply
    3,187.52x = 4,398 × 1,945.52
  4. Step 4: Simplify right side
    3,187.52x = 8,556,396.96
  5. Step 5: Solve for x
    x = 8,556,396.96/3,187.52
  6. Step 6: Final answer
    x = 2,684.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.