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Finding the Fourth Proportional to 7,019.87, 9,687.30 and 3,876.05

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Solution

The fourth proportional to 7,019.87, 9,687.30 and 3,876.05 is: 5,348.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,019.87 : 9,687.30 = 3,876.05 : x
  2. Step 2: Convert to fraction form
    7,019.87/9,687.30 = 3,876.05/x
  3. Step 3: Cross multiply
    7,019.87x = 9,687.30 × 3,876.05
  4. Step 4: Simplify right side
    7,019.87x = 37,548,468.85
  5. Step 5: Solve for x
    x = 37,548,468.85/7,019.87
  6. Step 6: Final answer
    x = 5,348.89

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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.