Home / 1,813.62-2,718.39-1,081.67

Finding the Fourth Proportional to 1,813.62, 2,718.39 and 1,081.67

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Solution

The fourth proportional to 1,813.62, 2,718.39 and 1,081.67 is: 1,621.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.62 : 2,718.39 = 1,081.67 : x
  2. Step 2: Convert to fraction form
    1,813.62/2,718.39 = 1,081.67/x
  3. Step 3: Cross multiply
    1,813.62x = 2,718.39 × 1,081.67
  4. Step 4: Simplify right side
    1,813.62x = 2,940,387.32
  5. Step 5: Solve for x
    x = 2,940,387.32/1,813.62
  6. Step 6: Final answer
    x = 1,621.28

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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.