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Finding the Fourth Proportional to 7,620.62, 10,517.21 and 4,790.13

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Solution

The fourth proportional to 7,620.62, 10,517.21 and 4,790.13 is: 6,610.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.62 : 10,517.21 = 4,790.13 : x
  2. Step 2: Convert to fraction form
    7,620.62/10,517.21 = 4,790.13/x
  3. Step 3: Cross multiply
    7,620.62x = 10,517.21 × 4,790.13
  4. Step 4: Simplify right side
    7,620.62x = 50,378,803.14
  5. Step 5: Solve for x
    x = 50,378,803.14/7,620.62
  6. Step 6: Final answer
    x = 6,610.85

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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.