Home / 2,954.94-4,078.79-2,015.34

Finding the Fourth Proportional to 2,954.94, 4,078.79 and 2,015.34

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Solution

The fourth proportional to 2,954.94, 4,078.79 and 2,015.34 is: 2,781.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,954.94 : 4,078.79 = 2,015.34 : x
  2. Step 2: Convert to fraction form
    2,954.94/4,078.79 = 2,015.34/x
  3. Step 3: Cross multiply
    2,954.94x = 4,078.79 × 2,015.34
  4. Step 4: Simplify right side
    2,954.94x = 8,220,148.64
  5. Step 5: Solve for x
    x = 8,220,148.64/2,954.94
  6. Step 6: Final answer
    x = 2,781.83

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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.