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Finding the Fourth Proportional to 3,959.59, 5,464.40 and 2,191.17

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Solution

The fourth proportional to 3,959.59, 5,464.40 and 2,191.17 is: 3,023.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.59 : 5,464.40 = 2,191.17 : x
  2. Step 2: Convert to fraction form
    3,959.59/5,464.40 = 2,191.17/x
  3. Step 3: Cross multiply
    3,959.59x = 5,464.40 × 2,191.17
  4. Step 4: Simplify right side
    3,959.59x = 11,973,429.35
  5. Step 5: Solve for x
    x = 11,973,429.35/3,959.59
  6. Step 6: Final answer
    x = 3,023.91

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.