Home / 8,120.46-12,181.96-3,440.48

Finding the Fourth Proportional to 8,120.46, 12,181.96 and 3,440.48

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Solution

The fourth proportional to 8,120.46, 12,181.96 and 3,440.48 is: 5,161.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.46 : 12,181.96 = 3,440.48 : x
  2. Step 2: Convert to fraction form
    8,120.46/12,181.96 = 3,440.48/x
  3. Step 3: Cross multiply
    8,120.46x = 12,181.96 × 3,440.48
  4. Step 4: Simplify right side
    8,120.46x = 41,911,789.74
  5. Step 5: Solve for x
    x = 41,911,789.74/8,120.46
  6. Step 6: Final answer
    x = 5,161.26

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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.