Home / 3,926.55-5,418.63-2,158.16

Finding the Fourth Proportional to 3,926.55, 5,418.63 and 2,158.16

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Solution

The fourth proportional to 3,926.55, 5,418.63 and 2,158.16 is: 2,978.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.55 : 5,418.63 = 2,158.16 : x
  2. Step 2: Convert to fraction form
    3,926.55/5,418.63 = 2,158.16/x
  3. Step 3: Cross multiply
    3,926.55x = 5,418.63 × 2,158.16
  4. Step 4: Simplify right side
    3,926.55x = 11,694,243.43
  5. Step 5: Solve for x
    x = 11,694,243.43/3,926.55
  6. Step 6: Final answer
    x = 2,978.25

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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.