Home / 3,905.55-5,859-1,442.21

Finding the Fourth Proportional to 3,905.55, 5,859 and 1,442.21

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Solution

The fourth proportional to 3,905.55, 5,859 and 1,442.21 is: 2,163.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.55 : 5,859 = 1,442.21 : x
  2. Step 2: Convert to fraction form
    3,905.55/5,859 = 1,442.21/x
  3. Step 3: Cross multiply
    3,905.55x = 5,859 × 1,442.21
  4. Step 4: Simplify right side
    3,905.55x = 8,449,879.10
  5. Step 5: Solve for x
    x = 8,449,879.10/3,905.55
  6. Step 6: Final answer
    x = 2,163.56

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1.5x scale

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.