Home / 3,390.38-5,085.66-1,081.88

Finding the Fourth Proportional to 3,390.38, 5,085.66 and 1,081.88

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Solution

The fourth proportional to 3,390.38, 5,085.66 and 1,081.88 is: 1,622.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.38 : 5,085.66 = 1,081.88 : x
  2. Step 2: Convert to fraction form
    3,390.38/5,085.66 = 1,081.88/x
  3. Step 3: Cross multiply
    3,390.38x = 5,085.66 × 1,081.88
  4. Step 4: Simplify right side
    3,390.38x = 5,502,043.00
  5. Step 5: Solve for x
    x = 5,502,043.00/3,390.38
  6. Step 6: Final answer
    x = 1,622.84

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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.