Home / 1,965.80-2,711.26-1,219.34

Finding the Fourth Proportional to 1,965.80, 2,711.26 and 1,219.34

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Solution

The fourth proportional to 1,965.80, 2,711.26 and 1,219.34 is: 1,681.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.80 : 2,711.26 = 1,219.34 : x
  2. Step 2: Convert to fraction form
    1,965.80/2,711.26 = 1,219.34/x
  3. Step 3: Cross multiply
    1,965.80x = 2,711.26 × 1,219.34
  4. Step 4: Simplify right side
    1,965.80x = 3,305,928.12
  5. Step 5: Solve for x
    x = 3,305,928.12/1,965.80
  6. Step 6: Final answer
    x = 1,681.73

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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.