Home / 2,821.80-4,231.62-1,090.56

Finding the Fourth Proportional to 2,821.80, 4,231.62 and 1,090.56

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Solution

The fourth proportional to 2,821.80, 4,231.62 and 1,090.56 is: 1,635.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.80 : 4,231.62 = 1,090.56 : x
  2. Step 2: Convert to fraction form
    2,821.80/4,231.62 = 1,090.56/x
  3. Step 3: Cross multiply
    2,821.80x = 4,231.62 × 1,090.56
  4. Step 4: Simplify right side
    2,821.80x = 4,614,835.51
  5. Step 5: Solve for x
    x = 4,614,835.51/2,821.80
  6. Step 6: Final answer
    x = 1,635.42

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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.