Home / 2,190.56-3,021.72-1,351.64

Finding the Fourth Proportional to 2,190.56, 3,021.72 and 1,351.64

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Solution

The fourth proportional to 2,190.56, 3,021.72 and 1,351.64 is: 1,864.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.56 : 3,021.72 = 1,351.64 : x
  2. Step 2: Convert to fraction form
    2,190.56/3,021.72 = 1,351.64/x
  3. Step 3: Cross multiply
    2,190.56x = 3,021.72 × 1,351.64
  4. Step 4: Simplify right side
    2,190.56x = 4,084,277.62
  5. Step 5: Solve for x
    x = 4,084,277.62/2,190.56
  6. Step 6: Final answer
    x = 1,864.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.