Home / 5,422.14-8,127.74-4,120.88

Finding the Fourth Proportional to 5,422.14, 8,127.74 and 4,120.88

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Solution

The fourth proportional to 5,422.14, 8,127.74 and 4,120.88 is: 6,177.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.14 : 8,127.74 = 4,120.88 : x
  2. Step 2: Convert to fraction form
    5,422.14/8,127.74 = 4,120.88/x
  3. Step 3: Cross multiply
    5,422.14x = 8,127.74 × 4,120.88
  4. Step 4: Simplify right side
    5,422.14x = 33,493,410.87
  5. Step 5: Solve for x
    x = 33,493,410.87/5,422.14
  6. Step 6: Final answer
    x = 6,177.16

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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.