Home / 1,349.82-2,021.58-1,039.21

Finding the Fourth Proportional to 1,349.82, 2,021.58 and 1,039.21

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Solution

The fourth proportional to 1,349.82, 2,021.58 and 1,039.21 is: 1,556.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.82 : 2,021.58 = 1,039.21 : x
  2. Step 2: Convert to fraction form
    1,349.82/2,021.58 = 1,039.21/x
  3. Step 3: Cross multiply
    1,349.82x = 2,021.58 × 1,039.21
  4. Step 4: Simplify right side
    1,349.82x = 2,100,832.15
  5. Step 5: Solve for x
    x = 2,100,832.15/1,349.82
  6. Step 6: Final answer
    x = 1,556.38

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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.