Home / 3,189.29-4,783.81-1,109.77

Finding the Fourth Proportional to 3,189.29, 4,783.81 and 1,109.77

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Solution

The fourth proportional to 3,189.29, 4,783.81 and 1,109.77 is: 1,664.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.29 : 4,783.81 = 1,109.77 : x
  2. Step 2: Convert to fraction form
    3,189.29/4,783.81 = 1,109.77/x
  3. Step 3: Cross multiply
    3,189.29x = 4,783.81 × 1,109.77
  4. Step 4: Simplify right side
    3,189.29x = 5,308,914.09
  5. Step 5: Solve for x
    x = 5,308,914.09/3,189.29
  6. Step 6: Final answer
    x = 1,664.61

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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.