Home / 8,152.22-12,221.04-3,989.63

Finding the Fourth Proportional to 8,152.22, 12,221.04 and 3,989.63

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Solution

The fourth proportional to 8,152.22, 12,221.04 and 3,989.63 is: 5,980.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,152.22 : 12,221.04 = 3,989.63 : x
  2. Step 2: Convert to fraction form
    8,152.22/12,221.04 = 3,989.63/x
  3. Step 3: Cross multiply
    8,152.22x = 12,221.04 × 3,989.63
  4. Step 4: Simplify right side
    8,152.22x = 48,757,427.82
  5. Step 5: Solve for x
    x = 48,757,427.82/8,152.22
  6. Step 6: Final answer
    x = 5,980.88

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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.