Home / 2,679.06-4,020.75-1,380.90

Finding the Fourth Proportional to 2,679.06, 4,020.75 and 1,380.90

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Solution

The fourth proportional to 2,679.06, 4,020.75 and 1,380.90 is: 2,072.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.06 : 4,020.75 = 1,380.90 : x
  2. Step 2: Convert to fraction form
    2,679.06/4,020.75 = 1,380.90/x
  3. Step 3: Cross multiply
    2,679.06x = 4,020.75 × 1,380.90
  4. Step 4: Simplify right side
    2,679.06x = 5,552,253.68
  5. Step 5: Solve for x
    x = 5,552,253.68/2,679.06
  6. Step 6: Final answer
    x = 2,072.46

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1.5x scale

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.