Home / 3,198.83-4,410.09-2,870.78

Finding the Fourth Proportional to 3,198.83, 4,410.09 and 2,870.78

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Solution

The fourth proportional to 3,198.83, 4,410.09 and 2,870.78 is: 3,957.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.83 : 4,410.09 = 2,870.78 : x
  2. Step 2: Convert to fraction form
    3,198.83/4,410.09 = 2,870.78/x
  3. Step 3: Cross multiply
    3,198.83x = 4,410.09 × 2,870.78
  4. Step 4: Simplify right side
    3,198.83x = 12,660,372.79
  5. Step 5: Solve for x
    x = 12,660,372.79/3,198.83
  6. Step 6: Final answer
    x = 3,957.82

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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.