Home / 1,821.05-2,731.37-504.90

Finding the Fourth Proportional to 1,821.05, 2,731.37 and 504.90

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Solution

The fourth proportional to 1,821.05, 2,731.37 and 504.90 is: 757.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.05 : 2,731.37 = 504.90 : x
  2. Step 2: Convert to fraction form
    1,821.05/2,731.37 = 504.90/x
  3. Step 3: Cross multiply
    1,821.05x = 2,731.37 × 504.90
  4. Step 4: Simplify right side
    1,821.05x = 1,379,066.19
  5. Step 5: Solve for x
    x = 1,379,066.19/1,821.05
  6. Step 6: Final answer
    x = 757.29

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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.