Home / 1,450.87-2,002.21-787.73

Finding the Fourth Proportional to 1,450.87, 2,002.21 and 787.73

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Solution

The fourth proportional to 1,450.87, 2,002.21 and 787.73 is: 1,087.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.87 : 2,002.21 = 787.73 : x
  2. Step 2: Convert to fraction form
    1,450.87/2,002.21 = 787.73/x
  3. Step 3: Cross multiply
    1,450.87x = 2,002.21 × 787.73
  4. Step 4: Simplify right side
    1,450.87x = 1,577,186.93
  5. Step 5: Solve for x
    x = 1,577,186.93/1,450.87
  6. Step 6: Final answer
    x = 1,087.06

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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.