Home / 2,190.36-3,287.16-2,157.96

Finding the Fourth Proportional to 2,190.36, 3,287.16 and 2,157.96

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Solution

The fourth proportional to 2,190.36, 3,287.16 and 2,157.96 is: 3,238.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.36 : 3,287.16 = 2,157.96 : x
  2. Step 2: Convert to fraction form
    2,190.36/3,287.16 = 2,157.96/x
  3. Step 3: Cross multiply
    2,190.36x = 3,287.16 × 2,157.96
  4. Step 4: Simplify right side
    2,190.36x = 7,093,559.79
  5. Step 5: Solve for x
    x = 7,093,559.79/2,190.36
  6. Step 6: Final answer
    x = 3,238.54

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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.