Home / 2,763.21-4,142.07-1,120.68

Finding the Fourth Proportional to 2,763.21, 4,142.07 and 1,120.68

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Solution

The fourth proportional to 2,763.21, 4,142.07 and 1,120.68 is: 1,679.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,763.21 : 4,142.07 = 1,120.68 : x
  2. Step 2: Convert to fraction form
    2,763.21/4,142.07 = 1,120.68/x
  3. Step 3: Cross multiply
    2,763.21x = 4,142.07 × 1,120.68
  4. Step 4: Simplify right side
    2,763.21x = 4,641,935.01
  5. Step 5: Solve for x
    x = 4,641,935.01/2,763.21
  6. Step 6: Final answer
    x = 1,679.91

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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.