Home / 2,844.85-3,923.46-2,138.40

Finding the Fourth Proportional to 2,844.85, 3,923.46 and 2,138.40

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Solution

The fourth proportional to 2,844.85, 3,923.46 and 2,138.40 is: 2,949.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,844.85 : 3,923.46 = 2,138.40 : x
  2. Step 2: Convert to fraction form
    2,844.85/3,923.46 = 2,138.40/x
  3. Step 3: Cross multiply
    2,844.85x = 3,923.46 × 2,138.40
  4. Step 4: Simplify right side
    2,844.85x = 8,389,932.88
  5. Step 5: Solve for x
    x = 8,389,932.88/2,844.85
  6. Step 6: Final answer
    x = 2,949.17

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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.