Home / 3,128.19-4,313.37-2,134.05

Finding the Fourth Proportional to 3,128.19, 4,313.37 and 2,134.05

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Solution

The fourth proportional to 3,128.19, 4,313.37 and 2,134.05 is: 2,942.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.19 : 4,313.37 = 2,134.05 : x
  2. Step 2: Convert to fraction form
    3,128.19/4,313.37 = 2,134.05/x
  3. Step 3: Cross multiply
    3,128.19x = 4,313.37 × 2,134.05
  4. Step 4: Simplify right side
    3,128.19x = 9,204,947.25
  5. Step 5: Solve for x
    x = 9,204,947.25/3,128.19
  6. Step 6: Final answer
    x = 2,942.58

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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.