Home / 3,926.94-5,419.14-2,158.50

Finding the Fourth Proportional to 3,926.94, 5,419.14 and 2,158.50

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Solution

The fourth proportional to 3,926.94, 5,419.14 and 2,158.50 is: 2,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.94 : 5,419.14 = 2,158.50 : x
  2. Step 2: Convert to fraction form
    3,926.94/5,419.14 = 2,158.50/x
  3. Step 3: Cross multiply
    3,926.94x = 5,419.14 × 2,158.50
  4. Step 4: Simplify right side
    3,926.94x = 11,697,213.69
  5. Step 5: Solve for x
    x = 11,697,213.69/3,926.94
  6. Step 6: Final answer
    x = 2,978.71

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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.