Home / 2,813.62-4,220.11-1,081.03

Finding the Fourth Proportional to 2,813.62, 4,220.11 and 1,081.03

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Solution

The fourth proportional to 2,813.62, 4,220.11 and 1,081.03 is: 1,621.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.62 : 4,220.11 = 1,081.03 : x
  2. Step 2: Convert to fraction form
    2,813.62/4,220.11 = 1,081.03/x
  3. Step 3: Cross multiply
    2,813.62x = 4,220.11 × 1,081.03
  4. Step 4: Simplify right side
    2,813.62x = 4,562,065.51
  5. Step 5: Solve for x
    x = 4,562,065.51/2,813.62
  6. Step 6: Final answer
    x = 1,621.42

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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.