Home / 4,083.90-6,121.94-1,308.78

Finding the Fourth Proportional to 4,083.90, 6,121.94 and 1,308.78

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Solution

The fourth proportional to 4,083.90, 6,121.94 and 1,308.78 is: 1,961.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,083.90 : 6,121.94 = 1,308.78 : x
  2. Step 2: Convert to fraction form
    4,083.90/6,121.94 = 1,308.78/x
  3. Step 3: Cross multiply
    4,083.90x = 6,121.94 × 1,308.78
  4. Step 4: Simplify right side
    4,083.90x = 8,012,272.63
  5. Step 5: Solve for x
    x = 8,012,272.63/4,083.90
  6. Step 6: Final answer
    x = 1,961.92

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1.5x scale

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.