Home / 1,965.45-2,947.21-1,143.97

Finding the Fourth Proportional to 1,965.45, 2,947.21 and 1,143.97

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Solution

The fourth proportional to 1,965.45, 2,947.21 and 1,143.97 is: 1,715.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.45 : 2,947.21 = 1,143.97 : x
  2. Step 2: Convert to fraction form
    1,965.45/2,947.21 = 1,143.97/x
  3. Step 3: Cross multiply
    1,965.45x = 2,947.21 × 1,143.97
  4. Step 4: Simplify right side
    1,965.45x = 3,371,519.82
  5. Step 5: Solve for x
    x = 3,371,519.82/1,965.45
  6. Step 6: Final answer
    x = 1,715.39

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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.