Home / 3,078.20-4,249.52-1,899.96

Finding the Fourth Proportional to 3,078.20, 4,249.52 and 1,899.96

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Solution

The fourth proportional to 3,078.20, 4,249.52 and 1,899.96 is: 2,622.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.20 : 4,249.52 = 1,899.96 : x
  2. Step 2: Convert to fraction form
    3,078.20/4,249.52 = 1,899.96/x
  3. Step 3: Cross multiply
    3,078.20x = 4,249.52 × 1,899.96
  4. Step 4: Simplify right side
    3,078.20x = 8,073,918.02
  5. Step 5: Solve for x
    x = 8,073,918.02/3,078.20
  6. Step 6: Final answer
    x = 2,622.93

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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.