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Finding the Fourth Proportional to 1,965.92, 2,947.26 and 1,040.92

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Solution

The fourth proportional to 1,965.92, 2,947.26 and 1,040.92 is: 1,560.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.92 : 2,947.26 = 1,040.92 : x
  2. Step 2: Convert to fraction form
    1,965.92/2,947.26 = 1,040.92/x
  3. Step 3: Cross multiply
    1,965.92x = 2,947.26 × 1,040.92
  4. Step 4: Simplify right side
    1,965.92x = 3,067,861.88
  5. Step 5: Solve for x
    x = 3,067,861.88/1,965.92
  6. Step 6: Final answer
    x = 1,560.52

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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.