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Finding the Fourth Proportional to 3,245.82, 4,480.15 and 1,919.99

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Solution

The fourth proportional to 3,245.82, 4,480.15 and 1,919.99 is: 2,650.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,245.82 : 4,480.15 = 1,919.99 : x
  2. Step 2: Convert to fraction form
    3,245.82/4,480.15 = 1,919.99/x
  3. Step 3: Cross multiply
    3,245.82x = 4,480.15 × 1,919.99
  4. Step 4: Simplify right side
    3,245.82x = 8,601,833.40
  5. Step 5: Solve for x
    x = 8,601,833.40/3,245.82
  6. Step 6: Final answer
    x = 2,650.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.