Home / 2,112.52-3,168.78-1,529.32

Finding the Fourth Proportional to 2,112.52, 3,168.78 and 1,529.32

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Solution

The fourth proportional to 2,112.52, 3,168.78 and 1,529.32 is: 2,293.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.52 : 3,168.78 = 1,529.32 : x
  2. Step 2: Convert to fraction form
    2,112.52/3,168.78 = 1,529.32/x
  3. Step 3: Cross multiply
    2,112.52x = 3,168.78 × 1,529.32
  4. Step 4: Simplify right side
    2,112.52x = 4,846,078.63
  5. Step 5: Solve for x
    x = 4,846,078.63/2,112.52
  6. Step 6: Final answer
    x = 2,293.98

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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.