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Finding the Fourth Proportional to 1,965.92, 2,945.01 and 1,142.46

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Solution

The fourth proportional to 1,965.92, 2,945.01 and 1,142.46 is: 1,711.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.92 : 2,945.01 = 1,142.46 : x
  2. Step 2: Convert to fraction form
    1,965.92/2,945.01 = 1,142.46/x
  3. Step 3: Cross multiply
    1,965.92x = 2,945.01 × 1,142.46
  4. Step 4: Simplify right side
    1,965.92x = 3,364,556.12
  5. Step 5: Solve for x
    x = 3,364,556.12/1,965.92
  6. Step 6: Final answer
    x = 1,711.44

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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.