Home / 8,084.13-12,129.17-3,405.33

Finding the Fourth Proportional to 8,084.13, 12,129.17 and 3,405.33

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Solution

The fourth proportional to 8,084.13, 12,129.17 and 3,405.33 is: 5,109.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,084.13 : 12,129.17 = 3,405.33 : x
  2. Step 2: Convert to fraction form
    8,084.13/12,129.17 = 3,405.33/x
  3. Step 3: Cross multiply
    8,084.13x = 12,129.17 × 3,405.33
  4. Step 4: Simplify right side
    8,084.13x = 41,303,809.45
  5. Step 5: Solve for x
    x = 41,303,809.45/8,084.13
  6. Step 6: Final answer
    x = 5,109.25

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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.