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Finding the Fourth Proportional to 7,873.11, 10,863.99 and 4,515

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Solution

The fourth proportional to 7,873.11, 10,863.99 and 4,515 is: 6,230.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.11 : 10,863.99 = 4,515 : x
  2. Step 2: Convert to fraction form
    7,873.11/10,863.99 = 4,515/x
  3. Step 3: Cross multiply
    7,873.11x = 10,863.99 × 4,515
  4. Step 4: Simplify right side
    7,873.11x = 49,050,914.85
  5. Step 5: Solve for x
    x = 49,050,914.85/7,873.11
  6. Step 6: Final answer
    x = 6,230.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.