Home / 5,249.08-7,875.81-2,131.30

Finding the Fourth Proportional to 5,249.08, 7,875.81 and 2,131.30

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Solution

The fourth proportional to 5,249.08, 7,875.81 and 2,131.30 is: 3,197.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.08 : 7,875.81 = 2,131.30 : x
  2. Step 2: Convert to fraction form
    5,249.08/7,875.81 = 2,131.30/x
  3. Step 3: Cross multiply
    5,249.08x = 7,875.81 × 2,131.30
  4. Step 4: Simplify right side
    5,249.08x = 16,785,713.85
  5. Step 5: Solve for x
    x = 16,785,713.85/5,249.08
  6. Step 6: Final answer
    x = 3,197.84

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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.