Home / 2,788.36-4,183.36-1,145

Finding the Fourth Proportional to 2,788.36, 4,183.36 and 1,145

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Solution

The fourth proportional to 2,788.36, 4,183.36 and 1,145 is: 1,717.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.36 : 4,183.36 = 1,145 : x
  2. Step 2: Convert to fraction form
    2,788.36/4,183.36 = 1,145/x
  3. Step 3: Cross multiply
    2,788.36x = 4,183.36 × 1,145
  4. Step 4: Simplify right side
    2,788.36x = 4,789,947.20
  5. Step 5: Solve for x
    x = 4,789,947.20/2,788.36
  6. Step 6: Final answer
    x = 1,717.84

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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.