Home / 1,120.82-1,669.96-1,057.94

Finding the Fourth Proportional to 1,120.82, 1,669.96 and 1,057.94

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Solution

The fourth proportional to 1,120.82, 1,669.96 and 1,057.94 is: 1,576.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.82 : 1,669.96 = 1,057.94 : x
  2. Step 2: Convert to fraction form
    1,120.82/1,669.96 = 1,057.94/x
  3. Step 3: Cross multiply
    1,120.82x = 1,669.96 × 1,057.94
  4. Step 4: Simplify right side
    1,120.82x = 1,766,712.19
  5. Step 5: Solve for x
    x = 1,766,712.19/1,120.82
  6. Step 6: Final answer
    x = 1,576.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.