Home / 3,685.82-5,530.80-2,128.04

Finding the Fourth Proportional to 3,685.82, 5,530.80 and 2,128.04

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Solution

The fourth proportional to 3,685.82, 5,530.80 and 2,128.04 is: 3,193.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.82 : 5,530.80 = 2,128.04 : x
  2. Step 2: Convert to fraction form
    3,685.82/5,530.80 = 2,128.04/x
  3. Step 3: Cross multiply
    3,685.82x = 5,530.80 × 2,128.04
  4. Step 4: Simplify right side
    3,685.82x = 11,769,763.63
  5. Step 5: Solve for x
    x = 11,769,763.63/3,685.82
  6. Step 6: Final answer
    x = 3,193.26

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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.