Home / 2,190.64-3,281.28-1,772.37

Finding the Fourth Proportional to 2,190.64, 3,281.28 and 1,772.37

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Solution

The fourth proportional to 2,190.64, 3,281.28 and 1,772.37 is: 2,654.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.64 : 3,281.28 = 1,772.37 : x
  2. Step 2: Convert to fraction form
    2,190.64/3,281.28 = 1,772.37/x
  3. Step 3: Cross multiply
    2,190.64x = 3,281.28 × 1,772.37
  4. Step 4: Simplify right side
    2,190.64x = 5,815,655.03
  5. Step 5: Solve for x
    x = 5,815,655.03/2,190.64
  6. Step 6: Final answer
    x = 2,654.78

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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.