Home / 1,965.36-2,945.36-1,086.56

Finding the Fourth Proportional to 1,965.36, 2,945.36 and 1,086.56

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Solution

The fourth proportional to 1,965.36, 2,945.36 and 1,086.56 is: 1,628.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.36 : 2,945.36 = 1,086.56 : x
  2. Step 2: Convert to fraction form
    1,965.36/2,945.36 = 1,086.56/x
  3. Step 3: Cross multiply
    1,965.36x = 2,945.36 × 1,086.56
  4. Step 4: Simplify right side
    1,965.36x = 3,200,310.36
  5. Step 5: Solve for x
    x = 3,200,310.36/1,965.36
  6. Step 6: Final answer
    x = 1,628.36

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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.