Home / 3,189.42-4,785.35-1,109.66

Finding the Fourth Proportional to 3,189.42, 4,785.35 and 1,109.66

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Solution

The fourth proportional to 3,189.42, 4,785.35 and 1,109.66 is: 1,664.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.42 : 4,785.35 = 1,109.66 : x
  2. Step 2: Convert to fraction form
    3,189.42/4,785.35 = 1,109.66/x
  3. Step 3: Cross multiply
    3,189.42x = 4,785.35 × 1,109.66
  4. Step 4: Simplify right side
    3,189.42x = 5,310,082.01
  5. Step 5: Solve for x
    x = 5,310,082.01/3,189.42
  6. Step 6: Final answer
    x = 1,664.91

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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.