Home / 1,321.37-1,981.48-704.94

Finding the Fourth Proportional to 1,321.37, 1,981.48 and 704.94

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Solution

The fourth proportional to 1,321.37, 1,981.48 and 704.94 is: 1,057.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321.37 : 1,981.48 = 704.94 : x
  2. Step 2: Convert to fraction form
    1,321.37/1,981.48 = 704.94/x
  3. Step 3: Cross multiply
    1,321.37x = 1,981.48 × 704.94
  4. Step 4: Simplify right side
    1,321.37x = 1,396,812.84
  5. Step 5: Solve for x
    x = 1,396,812.84/1,321.37
  6. Step 6: Final answer
    x = 1,057.10

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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.