Home / 2,190.20-3,285.50-729.44

Finding the Fourth Proportional to 2,190.20, 3,285.50 and 729.44

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Solution

The fourth proportional to 2,190.20, 3,285.50 and 729.44 is: 1,094.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.20 : 3,285.50 = 729.44 : x
  2. Step 2: Convert to fraction form
    2,190.20/3,285.50 = 729.44/x
  3. Step 3: Cross multiply
    2,190.20x = 3,285.50 × 729.44
  4. Step 4: Simplify right side
    2,190.20x = 2,396,575.12
  5. Step 5: Solve for x
    x = 2,396,575.12/2,190.20
  6. Step 6: Final answer
    x = 1,094.23

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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.