Home / 3,959.70-5,464.37-2,191.28

Finding the Fourth Proportional to 3,959.70, 5,464.37 and 2,191.28

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Solution

The fourth proportional to 3,959.70, 5,464.37 and 2,191.28 is: 3,023.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.70 : 5,464.37 = 2,191.28 : x
  2. Step 2: Convert to fraction form
    3,959.70/5,464.37 = 2,191.28/x
  3. Step 3: Cross multiply
    3,959.70x = 5,464.37 × 2,191.28
  4. Step 4: Simplify right side
    3,959.70x = 11,973,926.42
  5. Step 5: Solve for x
    x = 11,973,926.42/3,959.70
  6. Step 6: Final answer
    x = 3,023.95

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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.