Home / 2,664.42-3,997.80-1,021.20

Finding the Fourth Proportional to 2,664.42, 3,997.80 and 1,021.20

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Solution

The fourth proportional to 2,664.42, 3,997.80 and 1,021.20 is: 1,532.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,664.42 : 3,997.80 = 1,021.20 : x
  2. Step 2: Convert to fraction form
    2,664.42/3,997.80 = 1,021.20/x
  3. Step 3: Cross multiply
    2,664.42x = 3,997.80 × 1,021.20
  4. Step 4: Simplify right side
    2,664.42x = 4,082,553.36
  5. Step 5: Solve for x
    x = 4,082,553.36/2,664.42
  6. Step 6: Final answer
    x = 1,532.25

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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.