Home / 8,078.00-12,116.21-2,811.74

Finding the Fourth Proportional to 8,078.00, 12,116.21 and 2,811.74

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Solution

The fourth proportional to 8,078.00, 12,116.21 and 2,811.74 is: 4,217.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.00 : 12,116.21 = 2,811.74 : x
  2. Step 2: Convert to fraction form
    8,078.00/12,116.21 = 2,811.74/x
  3. Step 3: Cross multiply
    8,078.00x = 12,116.21 × 2,811.74
  4. Step 4: Simplify right side
    8,078.00x = 34,067,557.67
  5. Step 5: Solve for x
    x = 34,067,557.67/8,078.00
  6. Step 6: Final answer
    x = 4,217.33

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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.