Home / 3,425.76-5,135.40-3,111.48

Finding the Fourth Proportional to 3,425.76, 5,135.40 and 3,111.48

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Solution

The fourth proportional to 3,425.76, 5,135.40 and 3,111.48 is: 4,664.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.76 : 5,135.40 = 3,111.48 : x
  2. Step 2: Convert to fraction form
    3,425.76/5,135.40 = 3,111.48/x
  3. Step 3: Cross multiply
    3,425.76x = 5,135.40 × 3,111.48
  4. Step 4: Simplify right side
    3,425.76x = 15,978,694.39
  5. Step 5: Solve for x
    x = 15,978,694.39/3,425.76
  6. Step 6: Final answer
    x = 4,664.28

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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.