Home / 1,119.24-1,664.91-1,107.39

Finding the Fourth Proportional to 1,119.24, 1,664.91 and 1,107.39

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Solution

The fourth proportional to 1,119.24, 1,664.91 and 1,107.39 is: 1,647.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.24 : 1,664.91 = 1,107.39 : x
  2. Step 2: Convert to fraction form
    1,119.24/1,664.91 = 1,107.39/x
  3. Step 3: Cross multiply
    1,119.24x = 1,664.91 × 1,107.39
  4. Step 4: Simplify right side
    1,119.24x = 1,843,710.93
  5. Step 5: Solve for x
    x = 1,843,710.93/1,119.24
  6. Step 6: Final answer
    x = 1,647.29

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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.