Home / 8,160.86-12,239.44-3,996.70

Finding the Fourth Proportional to 8,160.86, 12,239.44 and 3,996.70

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Solution

The fourth proportional to 8,160.86, 12,239.44 and 3,996.70 is: 5,994.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,160.86 : 12,239.44 = 3,996.70 : x
  2. Step 2: Convert to fraction form
    8,160.86/12,239.44 = 3,996.70/x
  3. Step 3: Cross multiply
    8,160.86x = 12,239.44 × 3,996.70
  4. Step 4: Simplify right side
    8,160.86x = 48,917,369.85
  5. Step 5: Solve for x
    x = 48,917,369.85/8,160.86
  6. Step 6: Final answer
    x = 5,994.14

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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.