Home / 2,843.68-3,924.78-2,129.44

Finding the Fourth Proportional to 2,843.68, 3,924.78 and 2,129.44

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Solution

The fourth proportional to 2,843.68, 3,924.78 and 2,129.44 is: 2,939.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,843.68 : 3,924.78 = 2,129.44 : x
  2. Step 2: Convert to fraction form
    2,843.68/3,924.78 = 2,129.44/x
  3. Step 3: Cross multiply
    2,843.68x = 3,924.78 × 2,129.44
  4. Step 4: Simplify right side
    2,843.68x = 8,357,583.52
  5. Step 5: Solve for x
    x = 8,357,583.52/2,843.68
  6. Step 6: Final answer
    x = 2,939.00

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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.