Home / 2,680.83-4,021.38-1,219.05

Finding the Fourth Proportional to 2,680.83, 4,021.38 and 1,219.05

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Solution

The fourth proportional to 2,680.83, 4,021.38 and 1,219.05 is: 1,828.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.83 : 4,021.38 = 1,219.05 : x
  2. Step 2: Convert to fraction form
    2,680.83/4,021.38 = 1,219.05/x
  3. Step 3: Cross multiply
    2,680.83x = 4,021.38 × 1,219.05
  4. Step 4: Simplify right side
    2,680.83x = 4,902,263.29
  5. Step 5: Solve for x
    x = 4,902,263.29/2,680.83
  6. Step 6: Final answer
    x = 1,828.64

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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.