Home / 8,165.86-12,239.45-3,996.74

Finding the Fourth Proportional to 8,165.86, 12,239.45 and 3,996.74

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Solution

The fourth proportional to 8,165.86, 12,239.45 and 3,996.74 is: 5,990.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,165.86 : 12,239.45 = 3,996.74 : x
  2. Step 2: Convert to fraction form
    8,165.86/12,239.45 = 3,996.74/x
  3. Step 3: Cross multiply
    8,165.86x = 12,239.45 × 3,996.74
  4. Step 4: Simplify right side
    8,165.86x = 48,917,947.48
  5. Step 5: Solve for x
    x = 48,917,947.48/8,165.86
  6. Step 6: Final answer
    x = 5,990.54

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1.5x scale

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.