Home / 2,383.16-3,289.41-1,388.75

Finding the Fourth Proportional to 2,383.16, 3,289.41 and 1,388.75

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Solution

The fourth proportional to 2,383.16, 3,289.41 and 1,388.75 is: 1,916.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,383.16 : 3,289.41 = 1,388.75 : x
  2. Step 2: Convert to fraction form
    2,383.16/3,289.41 = 1,388.75/x
  3. Step 3: Cross multiply
    2,383.16x = 3,289.41 × 1,388.75
  4. Step 4: Simplify right side
    2,383.16x = 4,568,151.69
  5. Step 5: Solve for x
    x = 4,568,151.69/2,383.16
  6. Step 6: Final answer
    x = 1,916.85

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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.