Home / 1,207.91-1,673.19-1,183.31

Finding the Fourth Proportional to 1,207.91, 1,673.19 and 1,183.31

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Solution

The fourth proportional to 1,207.91, 1,673.19 and 1,183.31 is: 1,639.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.91 : 1,673.19 = 1,183.31 : x
  2. Step 2: Convert to fraction form
    1,207.91/1,673.19 = 1,183.31/x
  3. Step 3: Cross multiply
    1,207.91x = 1,673.19 × 1,183.31
  4. Step 4: Simplify right side
    1,207.91x = 1,979,900.37
  5. Step 5: Solve for x
    x = 1,979,900.37/1,207.91
  6. Step 6: Final answer
    x = 1,639.11

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.