Home / 8,516.85-12,778.04-3,587.86

Finding the Fourth Proportional to 8,516.85, 12,778.04 and 3,587.86

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Solution

The fourth proportional to 8,516.85, 12,778.04 and 3,587.86 is: 5,382.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,516.85 : 12,778.04 = 3,587.86 : x
  2. Step 2: Convert to fraction form
    8,516.85/12,778.04 = 3,587.86/x
  3. Step 3: Cross multiply
    8,516.85x = 12,778.04 × 3,587.86
  4. Step 4: Simplify right side
    8,516.85x = 45,845,818.59
  5. Step 5: Solve for x
    x = 45,845,818.59/8,516.85
  6. Step 6: Final answer
    x = 5,382.95

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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.