Home / 3,840.05-5,299.25-2,161.46

Finding the Fourth Proportional to 3,840.05, 5,299.25 and 2,161.46

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Solution

The fourth proportional to 3,840.05, 5,299.25 and 2,161.46 is: 2,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.05 : 5,299.25 = 2,161.46 : x
  2. Step 2: Convert to fraction form
    3,840.05/5,299.25 = 2,161.46/x
  3. Step 3: Cross multiply
    3,840.05x = 5,299.25 × 2,161.46
  4. Step 4: Simplify right side
    3,840.05x = 11,454,116.91
  5. Step 5: Solve for x
    x = 11,454,116.91/3,840.05
  6. Step 6: Final answer
    x = 2,982.80

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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.