Home / 3,820.91-5,272.97-2,142.32

Finding the Fourth Proportional to 3,820.91, 5,272.97 and 2,142.32

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Solution

The fourth proportional to 3,820.91, 5,272.97 and 2,142.32 is: 2,956.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.91 : 5,272.97 = 2,142.32 : x
  2. Step 2: Convert to fraction form
    3,820.91/5,272.97 = 2,142.32/x
  3. Step 3: Cross multiply
    3,820.91x = 5,272.97 × 2,142.32
  4. Step 4: Simplify right side
    3,820.91x = 11,296,352.01
  5. Step 5: Solve for x
    x = 11,296,352.01/3,820.91
  6. Step 6: Final answer
    x = 2,956.46

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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.