Home / 2,839.90-4,261.14-1,279.05

Finding the Fourth Proportional to 2,839.90, 4,261.14 and 1,279.05

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Solution

The fourth proportional to 2,839.90, 4,261.14 and 1,279.05 is: 1,919.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.90 : 4,261.14 = 1,279.05 : x
  2. Step 2: Convert to fraction form
    2,839.90/4,261.14 = 1,279.05/x
  3. Step 3: Cross multiply
    2,839.90x = 4,261.14 × 1,279.05
  4. Step 4: Simplify right side
    2,839.90x = 5,450,211.12
  5. Step 5: Solve for x
    x = 5,450,211.12/2,839.90
  6. Step 6: Final answer
    x = 1,919.16

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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.