Home / 2,821.10-4,232.55-1,359.45

Finding the Fourth Proportional to 2,821.10, 4,232.55 and 1,359.45

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Solution

The fourth proportional to 2,821.10, 4,232.55 and 1,359.45 is: 2,039.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.10 : 4,232.55 = 1,359.45 : x
  2. Step 2: Convert to fraction form
    2,821.10/4,232.55 = 1,359.45/x
  3. Step 3: Cross multiply
    2,821.10x = 4,232.55 × 1,359.45
  4. Step 4: Simplify right side
    2,821.10x = 5,753,940.10
  5. Step 5: Solve for x
    x = 5,753,940.10/2,821.10
  6. Step 6: Final answer
    x = 2,039.61

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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.