Home / 3,926.32-5,418.35-2,157.95

Finding the Fourth Proportional to 3,926.32, 5,418.35 and 2,157.95

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Solution

The fourth proportional to 3,926.32, 5,418.35 and 2,157.95 is: 2,977.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.32 : 5,418.35 = 2,157.95 : x
  2. Step 2: Convert to fraction form
    3,926.32/5,418.35 = 2,157.95/x
  3. Step 3: Cross multiply
    3,926.32x = 5,418.35 × 2,157.95
  4. Step 4: Simplify right side
    3,926.32x = 11,692,517.59
  5. Step 5: Solve for x
    x = 11,692,517.59/3,926.32
  6. Step 6: Final answer
    x = 2,977.99

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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.