Home / 3,189.39-4,784.05-1,109.36

Finding the Fourth Proportional to 3,189.39, 4,784.05 and 1,109.36

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Solution

The fourth proportional to 3,189.39, 4,784.05 and 1,109.36 is: 1,664.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.39 : 4,784.05 = 1,109.36 : x
  2. Step 2: Convert to fraction form
    3,189.39/4,784.05 = 1,109.36/x
  3. Step 3: Cross multiply
    3,189.39x = 4,784.05 × 1,109.36
  4. Step 4: Simplify right side
    3,189.39x = 5,307,207.01
  5. Step 5: Solve for x
    x = 5,307,207.01/3,189.39
  6. Step 6: Final answer
    x = 1,664.02

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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.