Home / 3,679.94-5,079.04-2,418.78

Finding the Fourth Proportional to 3,679.94, 5,079.04 and 2,418.78

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Solution

The fourth proportional to 3,679.94, 5,079.04 and 2,418.78 is: 3,338.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.94 : 5,079.04 = 2,418.78 : x
  2. Step 2: Convert to fraction form
    3,679.94/5,079.04 = 2,418.78/x
  3. Step 3: Cross multiply
    3,679.94x = 5,079.04 × 2,418.78
  4. Step 4: Simplify right side
    3,679.94x = 12,285,080.37
  5. Step 5: Solve for x
    x = 12,285,080.37/3,679.94
  6. Step 6: Final answer
    x = 3,338.39

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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.