Home / 8,121.11-12,181.31-4,826.94

Finding the Fourth Proportional to 8,121.11, 12,181.31 and 4,826.94

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Solution

The fourth proportional to 8,121.11, 12,181.31 and 4,826.94 is: 7,240.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.11 : 12,181.31 = 4,826.94 : x
  2. Step 2: Convert to fraction form
    8,121.11/12,181.31 = 4,826.94/x
  3. Step 3: Cross multiply
    8,121.11x = 12,181.31 × 4,826.94
  4. Step 4: Simplify right side
    8,121.11x = 58,798,428.36
  5. Step 5: Solve for x
    x = 58,798,428.36/8,121.11
  6. Step 6: Final answer
    x = 7,240.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.