Home / 3,820.72-5,731.08-2,090.56

Finding the Fourth Proportional to 3,820.72, 5,731.08 and 2,090.56

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Solution

The fourth proportional to 3,820.72, 5,731.08 and 2,090.56 is: 3,135.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.72 : 5,731.08 = 2,090.56 : x
  2. Step 2: Convert to fraction form
    3,820.72/5,731.08 = 2,090.56/x
  3. Step 3: Cross multiply
    3,820.72x = 5,731.08 × 2,090.56
  4. Step 4: Simplify right side
    3,820.72x = 11,981,166.60
  5. Step 5: Solve for x
    x = 11,981,166.60/3,820.72
  6. Step 6: Final answer
    x = 3,135.84

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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.