Home / 2,190.35-3,285.11-729.11

Finding the Fourth Proportional to 2,190.35, 3,285.11 and 729.11

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Solution

The fourth proportional to 2,190.35, 3,285.11 and 729.11 is: 1,093.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.35 : 3,285.11 = 729.11 : x
  2. Step 2: Convert to fraction form
    2,190.35/3,285.11 = 729.11/x
  3. Step 3: Cross multiply
    2,190.35x = 3,285.11 × 729.11
  4. Step 4: Simplify right side
    2,190.35x = 2,395,216.59
  5. Step 5: Solve for x
    x = 2,395,216.59/2,190.35
  6. Step 6: Final answer
    x = 1,093.53

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Double scale
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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.