Home / 3,821.07-5,272.79-2,142.44

Finding the Fourth Proportional to 3,821.07, 5,272.79 and 2,142.44

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Solution

The fourth proportional to 3,821.07, 5,272.79 and 2,142.44 is: 2,956.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.07 : 5,272.79 = 2,142.44 : x
  2. Step 2: Convert to fraction form
    3,821.07/5,272.79 = 2,142.44/x
  3. Step 3: Cross multiply
    3,821.07x = 5,272.79 × 2,142.44
  4. Step 4: Simplify right side
    3,821.07x = 11,296,599.13
  5. Step 5: Solve for x
    x = 11,296,599.13/3,821.07
  6. Step 6: Final answer
    x = 2,956.40

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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.