Home / 5,589.20-8,383.78-1,429.21

Finding the Fourth Proportional to 5,589.20, 8,383.78 and 1,429.21

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Solution

The fourth proportional to 5,589.20, 8,383.78 and 1,429.21 is: 2,143.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,589.20 : 8,383.78 = 1,429.21 : x
  2. Step 2: Convert to fraction form
    5,589.20/8,383.78 = 1,429.21/x
  3. Step 3: Cross multiply
    5,589.20x = 8,383.78 × 1,429.21
  4. Step 4: Simplify right side
    5,589.20x = 11,982,182.21
  5. Step 5: Solve for x
    x = 11,982,182.21/5,589.20
  6. Step 6: Final answer
    x = 2,143.81

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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.