Home / 5,252.21-7,879.90-2,131.64

Finding the Fourth Proportional to 5,252.21, 7,879.90 and 2,131.64

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Solution

The fourth proportional to 5,252.21, 7,879.90 and 2,131.64 is: 3,198.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,252.21 : 7,879.90 = 2,131.64 : x
  2. Step 2: Convert to fraction form
    5,252.21/7,879.90 = 2,131.64/x
  3. Step 3: Cross multiply
    5,252.21x = 7,879.90 × 2,131.64
  4. Step 4: Simplify right side
    5,252.21x = 16,797,110.04
  5. Step 5: Solve for x
    x = 16,797,110.04/5,252.21
  6. Step 6: Final answer
    x = 3,198.10

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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.