Home / 3,103.86-4,282.36-1,907.61

Finding the Fourth Proportional to 3,103.86, 4,282.36 and 1,907.61

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Solution

The fourth proportional to 3,103.86, 4,282.36 and 1,907.61 is: 2,631.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.86 : 4,282.36 = 1,907.61 : x
  2. Step 2: Convert to fraction form
    3,103.86/4,282.36 = 1,907.61/x
  3. Step 3: Cross multiply
    3,103.86x = 4,282.36 × 1,907.61
  4. Step 4: Simplify right side
    3,103.86x = 8,169,072.76
  5. Step 5: Solve for x
    x = 8,169,072.76/3,103.86
  6. Step 6: Final answer
    x = 2,631.91

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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.