Home / 3,820.44-5,272.31-2,142.21

Finding the Fourth Proportional to 3,820.44, 5,272.31 and 2,142.21

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Solution

The fourth proportional to 3,820.44, 5,272.31 and 2,142.21 is: 2,956.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.44 : 5,272.31 = 2,142.21 : x
  2. Step 2: Convert to fraction form
    3,820.44/5,272.31 = 2,142.21/x
  3. Step 3: Cross multiply
    3,820.44x = 5,272.31 × 2,142.21
  4. Step 4: Simplify right side
    3,820.44x = 11,294,395.21
  5. Step 5: Solve for x
    x = 11,294,395.21/3,820.44
  6. Step 6: Final answer
    x = 2,956.31

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1.5x scale

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.