Home / 3,683.05-5,081.33-2,190.78

Finding the Fourth Proportional to 3,683.05, 5,081.33 and 2,190.78

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Solution

The fourth proportional to 3,683.05, 5,081.33 and 2,190.78 is: 3,022.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,683.05 : 5,081.33 = 2,190.78 : x
  2. Step 2: Convert to fraction form
    3,683.05/5,081.33 = 2,190.78/x
  3. Step 3: Cross multiply
    3,683.05x = 5,081.33 × 2,190.78
  4. Step 4: Simplify right side
    3,683.05x = 11,132,081.61
  5. Step 5: Solve for x
    x = 11,132,081.61/3,683.05
  6. Step 6: Final answer
    x = 3,022.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.