Home / 6,129.12-9,191.78-3,205.83

Finding the Fourth Proportional to 6,129.12, 9,191.78 and 3,205.83

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Solution

The fourth proportional to 6,129.12, 9,191.78 and 3,205.83 is: 4,807.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,129.12 : 9,191.78 = 3,205.83 : x
  2. Step 2: Convert to fraction form
    6,129.12/9,191.78 = 3,205.83/x
  3. Step 3: Cross multiply
    6,129.12x = 9,191.78 × 3,205.83
  4. Step 4: Simplify right side
    6,129.12x = 29,467,246.13
  5. Step 5: Solve for x
    x = 29,467,246.13/6,129.12
  6. Step 6: Final answer
    x = 4,807.75

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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.