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Finding the Fourth Proportional to 3,893.91, 5,376.02 and 2,499.09

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Solution

The fourth proportional to 3,893.91, 5,376.02 and 2,499.09 is: 3,450.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.91 : 5,376.02 = 2,499.09 : x
  2. Step 2: Convert to fraction form
    3,893.91/5,376.02 = 2,499.09/x
  3. Step 3: Cross multiply
    3,893.91x = 5,376.02 × 2,499.09
  4. Step 4: Simplify right side
    3,893.91x = 13,435,139.22
  5. Step 5: Solve for x
    x = 13,435,139.22/3,893.91
  6. Step 6: Final answer
    x = 3,450.30

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1.5x scale

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.