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Finding the Fourth Proportional to 7,788.30, 10,747.89 and 4,251.59

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Solution

The fourth proportional to 7,788.30, 10,747.89 and 4,251.59 is: 5,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.30 : 10,747.89 = 4,251.59 : x
  2. Step 2: Convert to fraction form
    7,788.30/10,747.89 = 4,251.59/x
  3. Step 3: Cross multiply
    7,788.30x = 10,747.89 × 4,251.59
  4. Step 4: Simplify right side
    7,788.30x = 45,695,608.21
  5. Step 5: Solve for x
    x = 45,695,608.21/7,788.30
  6. Step 6: Final answer
    x = 5,867.21

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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.