Home / 1,790.09-2,682.20-911.38

Finding the Fourth Proportional to 1,790.09, 2,682.20 and 911.38

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Solution

The fourth proportional to 1,790.09, 2,682.20 and 911.38 is: 1,365.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.09 : 2,682.20 = 911.38 : x
  2. Step 2: Convert to fraction form
    1,790.09/2,682.20 = 911.38/x
  3. Step 3: Cross multiply
    1,790.09x = 2,682.20 × 911.38
  4. Step 4: Simplify right side
    1,790.09x = 2,444,499.01
  5. Step 5: Solve for x
    x = 2,444,499.01/1,790.09
  6. Step 6: Final answer
    x = 1,365.58

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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.