Home / 3,705.80-5,553.79-1,947.21

Finding the Fourth Proportional to 3,705.80, 5,553.79 and 1,947.21

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Solution

The fourth proportional to 3,705.80, 5,553.79 and 1,947.21 is: 2,918.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705.80 : 5,553.79 = 1,947.21 : x
  2. Step 2: Convert to fraction form
    3,705.80/5,553.79 = 1,947.21/x
  3. Step 3: Cross multiply
    3,705.80x = 5,553.79 × 1,947.21
  4. Step 4: Simplify right side
    3,705.80x = 10,814,367.66
  5. Step 5: Solve for x
    x = 10,814,367.66/3,705.80
  6. Step 6: Final answer
    x = 2,918.23

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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.