Home / 3,911.33-5,399.78-2,587.33

Finding the Fourth Proportional to 3,911.33, 5,399.78 and 2,587.33

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Solution

The fourth proportional to 3,911.33, 5,399.78 and 2,587.33 is: 3,571.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.33 : 5,399.78 = 2,587.33 : x
  2. Step 2: Convert to fraction form
    3,911.33/5,399.78 = 2,587.33/x
  3. Step 3: Cross multiply
    3,911.33x = 5,399.78 × 2,587.33
  4. Step 4: Simplify right side
    3,911.33x = 13,971,012.79
  5. Step 5: Solve for x
    x = 13,971,012.79/3,911.33
  6. Step 6: Final answer
    x = 3,571.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.