Home / 3,926.13-5,418.05-2,157.74

Finding the Fourth Proportional to 3,926.13, 5,418.05 and 2,157.74

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Solution

The fourth proportional to 3,926.13, 5,418.05 and 2,157.74 is: 2,977.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.13 : 5,418.05 = 2,157.74 : x
  2. Step 2: Convert to fraction form
    3,926.13/5,418.05 = 2,157.74/x
  3. Step 3: Cross multiply
    3,926.13x = 5,418.05 × 2,157.74
  4. Step 4: Simplify right side
    3,926.13x = 11,690,743.21
  5. Step 5: Solve for x
    x = 11,690,743.21/3,926.13
  6. Step 6: Final answer
    x = 2,977.68

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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.