Home / 3,415.89-5,125.05-1,107.39

Finding the Fourth Proportional to 3,415.89, 5,125.05 and 1,107.39

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Solution

The fourth proportional to 3,415.89, 5,125.05 and 1,107.39 is: 1,661.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.89 : 5,125.05 = 1,107.39 : x
  2. Step 2: Convert to fraction form
    3,415.89/5,125.05 = 1,107.39/x
  3. Step 3: Cross multiply
    3,415.89x = 5,125.05 × 1,107.39
  4. Step 4: Simplify right side
    3,415.89x = 5,675,429.12
  5. Step 5: Solve for x
    x = 5,675,429.12/3,415.89
  6. Step 6: Final answer
    x = 1,661.48

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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.