Home / 3,221.64-4,830.03-1,371.20

Finding the Fourth Proportional to 3,221.64, 4,830.03 and 1,371.20

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Solution

The fourth proportional to 3,221.64, 4,830.03 and 1,371.20 is: 2,055.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.64 : 4,830.03 = 1,371.20 : x
  2. Step 2: Convert to fraction form
    3,221.64/4,830.03 = 1,371.20/x
  3. Step 3: Cross multiply
    3,221.64x = 4,830.03 × 1,371.20
  4. Step 4: Simplify right side
    3,221.64x = 6,622,912.99
  5. Step 5: Solve for x
    x = 6,622,912.99/3,221.64
  6. Step 6: Final answer
    x = 2,055.76

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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.