Home / 8,120.18-12,181.32-2,854.82

Finding the Fourth Proportional to 8,120.18, 12,181.32 and 2,854.82

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Solution

The fourth proportional to 8,120.18, 12,181.32 and 2,854.82 is: 4,282.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.18 : 12,181.32 = 2,854.82 : x
  2. Step 2: Convert to fraction form
    8,120.18/12,181.32 = 2,854.82/x
  3. Step 3: Cross multiply
    8,120.18x = 12,181.32 × 2,854.82
  4. Step 4: Simplify right side
    8,120.18x = 34,775,475.96
  5. Step 5: Solve for x
    x = 34,775,475.96/8,120.18
  6. Step 6: Final answer
    x = 4,282.60

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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.