Home / 3,911.33-5,865.75-1,278.23

Finding the Fourth Proportional to 3,911.33, 5,865.75 and 1,278.23

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Solution

The fourth proportional to 3,911.33, 5,865.75 and 1,278.23 is: 1,916.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.33 : 5,865.75 = 1,278.23 : x
  2. Step 2: Convert to fraction form
    3,911.33/5,865.75 = 1,278.23/x
  3. Step 3: Cross multiply
    3,911.33x = 5,865.75 × 1,278.23
  4. Step 4: Simplify right side
    3,911.33x = 7,497,777.62
  5. Step 5: Solve for x
    x = 7,497,777.62/3,911.33
  6. Step 6: Final answer
    x = 1,916.94

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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.