Home / 8,155.91-12,239.34-2,961.78

Finding the Fourth Proportional to 8,155.91, 12,239.34 and 2,961.78

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Solution

The fourth proportional to 8,155.91, 12,239.34 and 2,961.78 is: 4,444.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.91 : 12,239.34 = 2,961.78 : x
  2. Step 2: Convert to fraction form
    8,155.91/12,239.34 = 2,961.78/x
  3. Step 3: Cross multiply
    8,155.91x = 12,239.34 × 2,961.78
  4. Step 4: Simplify right side
    8,155.91x = 36,250,244.27
  5. Step 5: Solve for x
    x = 36,250,244.27/8,155.91
  6. Step 6: Final answer
    x = 4,444.66

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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.