Home / 5,679.12-8,519.84-2,168.88

Finding the Fourth Proportional to 5,679.12, 8,519.84 and 2,168.88

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Solution

The fourth proportional to 5,679.12, 8,519.84 and 2,168.88 is: 3,253.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.12 : 8,519.84 = 2,168.88 : x
  2. Step 2: Convert to fraction form
    5,679.12/8,519.84 = 2,168.88/x
  3. Step 3: Cross multiply
    5,679.12x = 8,519.84 × 2,168.88
  4. Step 4: Simplify right side
    5,679.12x = 18,478,510.58
  5. Step 5: Solve for x
    x = 18,478,510.58/5,679.12
  6. Step 6: Final answer
    x = 3,253.76

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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.