Home / 5,620.28-8,431.48-2,157.24

Finding the Fourth Proportional to 5,620.28, 8,431.48 and 2,157.24

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Solution

The fourth proportional to 5,620.28, 8,431.48 and 2,157.24 is: 3,236.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.28 : 8,431.48 = 2,157.24 : x
  2. Step 2: Convert to fraction form
    5,620.28/8,431.48 = 2,157.24/x
  3. Step 3: Cross multiply
    5,620.28x = 8,431.48 × 2,157.24
  4. Step 4: Simplify right side
    5,620.28x = 18,188,725.92
  5. Step 5: Solve for x
    x = 18,188,725.92/5,620.28
  6. Step 6: Final answer
    x = 3,236.27

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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.