Home / 3,840.30-5,299.22-2,161.44

Finding the Fourth Proportional to 3,840.30, 5,299.22 and 2,161.44

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Solution

The fourth proportional to 3,840.30, 5,299.22 and 2,161.44 is: 2,982.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.30 : 5,299.22 = 2,161.44 : x
  2. Step 2: Convert to fraction form
    3,840.30/5,299.22 = 2,161.44/x
  3. Step 3: Cross multiply
    3,840.30x = 5,299.22 × 2,161.44
  4. Step 4: Simplify right side
    3,840.30x = 11,453,946.08
  5. Step 5: Solve for x
    x = 11,453,946.08/3,840.30
  6. Step 6: Final answer
    x = 2,982.57

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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.