Home / 2,112.75-2,914.92-1,367.28

Finding the Fourth Proportional to 2,112.75, 2,914.92 and 1,367.28

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Solution

The fourth proportional to 2,112.75, 2,914.92 and 1,367.28 is: 1,886.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.75 : 2,914.92 = 1,367.28 : x
  2. Step 2: Convert to fraction form
    2,112.75/2,914.92 = 1,367.28/x
  3. Step 3: Cross multiply
    2,112.75x = 2,914.92 × 1,367.28
  4. Step 4: Simplify right side
    2,112.75x = 3,985,511.82
  5. Step 5: Solve for x
    x = 3,985,511.82/2,112.75
  6. Step 6: Final answer
    x = 1,886.41

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1.5x scale

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.