Home / 1,450.62-2,002.10-821.43

Finding the Fourth Proportional to 1,450.62, 2,002.10 and 821.43

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Solution

The fourth proportional to 1,450.62, 2,002.10 and 821.43 is: 1,133.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.62 : 2,002.10 = 821.43 : x
  2. Step 2: Convert to fraction form
    1,450.62/2,002.10 = 821.43/x
  3. Step 3: Cross multiply
    1,450.62x = 2,002.10 × 821.43
  4. Step 4: Simplify right side
    1,450.62x = 1,644,580.90
  5. Step 5: Solve for x
    x = 1,644,580.90/1,450.62
  6. Step 6: Final answer
    x = 1,133.71

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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.