Home / 2,119.44-3,180.11-821.01

Finding the Fourth Proportional to 2,119.44, 3,180.11 and 821.01

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Solution

The fourth proportional to 2,119.44, 3,180.11 and 821.01 is: 1,231.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.44 : 3,180.11 = 821.01 : x
  2. Step 2: Convert to fraction form
    2,119.44/3,180.11 = 821.01/x
  3. Step 3: Cross multiply
    2,119.44x = 3,180.11 × 821.01
  4. Step 4: Simplify right side
    2,119.44x = 2,610,898.01
  5. Step 5: Solve for x
    x = 2,610,898.01/2,119.44
  6. Step 6: Final answer
    x = 1,231.88

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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.