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Finding the Fourth Proportional to 5,226.54, 7,212.68 and 2,868.70

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Solution

The fourth proportional to 5,226.54, 7,212.68 and 2,868.70 is: 3,958.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,226.54 : 7,212.68 = 2,868.70 : x
  2. Step 2: Convert to fraction form
    5,226.54/7,212.68 = 2,868.70/x
  3. Step 3: Cross multiply
    5,226.54x = 7,212.68 × 2,868.70
  4. Step 4: Simplify right side
    5,226.54x = 20,691,015.12
  5. Step 5: Solve for x
    x = 20,691,015.12/5,226.54
  6. Step 6: Final answer
    x = 3,958.84

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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.