Home / 1,790.91-2,688.66-1,380.33

Finding the Fourth Proportional to 1,790.91, 2,688.66 and 1,380.33

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Solution

The fourth proportional to 1,790.91, 2,688.66 and 1,380.33 is: 2,072.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.91 : 2,688.66 = 1,380.33 : x
  2. Step 2: Convert to fraction form
    1,790.91/2,688.66 = 1,380.33/x
  3. Step 3: Cross multiply
    1,790.91x = 2,688.66 × 1,380.33
  4. Step 4: Simplify right side
    1,790.91x = 3,711,238.06
  5. Step 5: Solve for x
    x = 3,711,238.06/1,790.91
  6. Step 6: Final answer
    x = 2,072.26

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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.