Home / 2,954.50-4,078.90-1,961.12

Finding the Fourth Proportional to 2,954.50, 4,078.90 and 1,961.12

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Solution

The fourth proportional to 2,954.50, 4,078.90 and 1,961.12 is: 2,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,954.50 : 4,078.90 = 1,961.12 : x
  2. Step 2: Convert to fraction form
    2,954.50/4,078.90 = 1,961.12/x
  3. Step 3: Cross multiply
    2,954.50x = 4,078.90 × 1,961.12
  4. Step 4: Simplify right side
    2,954.50x = 7,999,212.37
  5. Step 5: Solve for x
    x = 7,999,212.37/2,954.50
  6. Step 6: Final answer
    x = 2,707.47

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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.