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Finding the Fourth Proportional to 8,083.85, 12,130.43 and 3,403.49

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Solution

The fourth proportional to 8,083.85, 12,130.43 and 3,403.49 is: 5,107.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,083.85 : 12,130.43 = 3,403.49 : x
  2. Step 2: Convert to fraction form
    8,083.85/12,130.43 = 3,403.49/x
  3. Step 3: Cross multiply
    8,083.85x = 12,130.43 × 3,403.49
  4. Step 4: Simplify right side
    8,083.85x = 41,285,719.53
  5. Step 5: Solve for x
    x = 41,285,719.53/8,083.85
  6. Step 6: Final answer
    x = 5,107.19

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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.