Home / 3,418.86-5,128.39-2,256.31

Finding the Fourth Proportional to 3,418.86, 5,128.39 and 2,256.31

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Solution

The fourth proportional to 3,418.86, 5,128.39 and 2,256.31 is: 3,384.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.86 : 5,128.39 = 2,256.31 : x
  2. Step 2: Convert to fraction form
    3,418.86/5,128.39 = 2,256.31/x
  3. Step 3: Cross multiply
    3,418.86x = 5,128.39 × 2,256.31
  4. Step 4: Simplify right side
    3,418.86x = 11,571,237.64
  5. Step 5: Solve for x
    x = 11,571,237.64/3,418.86
  6. Step 6: Final answer
    x = 3,384.53

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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.