Home / 8,135.56-12,198.98-2,587.40

Finding the Fourth Proportional to 8,135.56, 12,198.98 and 2,587.40

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Solution

The fourth proportional to 8,135.56, 12,198.98 and 2,587.40 is: 3,879.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.56 : 12,198.98 = 2,587.40 : x
  2. Step 2: Convert to fraction form
    8,135.56/12,198.98 = 2,587.40/x
  3. Step 3: Cross multiply
    8,135.56x = 12,198.98 × 2,587.40
  4. Step 4: Simplify right side
    8,135.56x = 31,563,640.85
  5. Step 5: Solve for x
    x = 31,563,640.85/8,135.56
  6. Step 6: Final answer
    x = 3,879.71

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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.