Home / 2,208.70-3,313.32-1,112.68

Finding the Fourth Proportional to 2,208.70, 3,313.32 and 1,112.68

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Solution

The fourth proportional to 2,208.70, 3,313.32 and 1,112.68 is: 1,669.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.70 : 3,313.32 = 1,112.68 : x
  2. Step 2: Convert to fraction form
    2,208.70/3,313.32 = 1,112.68/x
  3. Step 3: Cross multiply
    2,208.70x = 3,313.32 × 1,112.68
  4. Step 4: Simplify right side
    2,208.70x = 3,686,664.90
  5. Step 5: Solve for x
    x = 3,686,664.90/2,208.70
  6. Step 6: Final answer
    x = 1,669.16

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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.