Home / 3,926.98-5,419.30-2,158.66

Finding the Fourth Proportional to 3,926.98, 5,419.30 and 2,158.66

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Solution

The fourth proportional to 3,926.98, 5,419.30 and 2,158.66 is: 2,978.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.98 : 5,419.30 = 2,158.66 : x
  2. Step 2: Convert to fraction form
    3,926.98/5,419.30 = 2,158.66/x
  3. Step 3: Cross multiply
    3,926.98x = 5,419.30 × 2,158.66
  4. Step 4: Simplify right side
    3,926.98x = 11,698,426.14
  5. Step 5: Solve for x
    x = 11,698,426.14/3,926.98
  6. Step 6: Final answer
    x = 2,978.99

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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.