Home / 3,661.89-5,491.19-2,181.81

Finding the Fourth Proportional to 3,661.89, 5,491.19 and 2,181.81

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Solution

The fourth proportional to 3,661.89, 5,491.19 and 2,181.81 is: 3,271.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,661.89 : 5,491.19 = 2,181.81 : x
  2. Step 2: Convert to fraction form
    3,661.89/5,491.19 = 2,181.81/x
  3. Step 3: Cross multiply
    3,661.89x = 5,491.19 × 2,181.81
  4. Step 4: Simplify right side
    3,661.89x = 11,980,711.64
  5. Step 5: Solve for x
    x = 11,980,711.64/3,661.89
  6. Step 6: Final answer
    x = 3,271.73

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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.