Home / 1,478.70-2,039.31-1,183.86

Finding the Fourth Proportional to 1,478.70, 2,039.31 and 1,183.86

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Solution

The fourth proportional to 1,478.70, 2,039.31 and 1,183.86 is: 1,632.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.70 : 2,039.31 = 1,183.86 : x
  2. Step 2: Convert to fraction form
    1,478.70/2,039.31 = 1,183.86/x
  3. Step 3: Cross multiply
    1,478.70x = 2,039.31 × 1,183.86
  4. Step 4: Simplify right side
    1,478.70x = 2,414,257.54
  5. Step 5: Solve for x
    x = 2,414,257.54/1,478.70
  6. Step 6: Final answer
    x = 1,632.69

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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.