Home / 8,630.38-12,945.48-2,786.86

Finding the Fourth Proportional to 8,630.38, 12,945.48 and 2,786.86

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Solution

The fourth proportional to 8,630.38, 12,945.48 and 2,786.86 is: 4,180.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.38 : 12,945.48 = 2,786.86 : x
  2. Step 2: Convert to fraction form
    8,630.38/12,945.48 = 2,786.86/x
  3. Step 3: Cross multiply
    8,630.38x = 12,945.48 × 2,786.86
  4. Step 4: Simplify right side
    8,630.38x = 36,077,240.39
  5. Step 5: Solve for x
    x = 36,077,240.39/8,630.38
  6. Step 6: Final answer
    x = 4,180.26

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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.