Home / 2,821.20-4,228.56-1,519.94

Finding the Fourth Proportional to 2,821.20, 4,228.56 and 1,519.94

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Solution

The fourth proportional to 2,821.20, 4,228.56 and 1,519.94 is: 2,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.20 : 4,228.56 = 1,519.94 : x
  2. Step 2: Convert to fraction form
    2,821.20/4,228.56 = 1,519.94/x
  3. Step 3: Cross multiply
    2,821.20x = 4,228.56 × 1,519.94
  4. Step 4: Simplify right side
    2,821.20x = 6,427,157.49
  5. Step 5: Solve for x
    x = 6,427,157.49/2,821.20
  6. Step 6: Final answer
    x = 2,278.16

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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.