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Finding the Fourth Proportional to 2,251.08, 3,374.46 and 711

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Solution

The fourth proportional to 2,251.08, 3,374.46 and 711 is: 1,065.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.08 : 3,374.46 = 711 : x
  2. Step 2: Convert to fraction form
    2,251.08/3,374.46 = 711/x
  3. Step 3: Cross multiply
    2,251.08x = 3,374.46 × 711
  4. Step 4: Simplify right side
    2,251.08x = 2,399,241.06
  5. Step 5: Solve for x
    x = 2,399,241.06/2,251.08
  6. Step 6: Final answer
    x = 1,065.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.