Home / 3,080.20-4,249.47-1,899.22

Finding the Fourth Proportional to 3,080.20, 4,249.47 and 1,899.22

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Solution

The fourth proportional to 3,080.20, 4,249.47 and 1,899.22 is: 2,620.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.20 : 4,249.47 = 1,899.22 : x
  2. Step 2: Convert to fraction form
    3,080.20/4,249.47 = 1,899.22/x
  3. Step 3: Cross multiply
    3,080.20x = 4,249.47 × 1,899.22
  4. Step 4: Simplify right side
    3,080.20x = 8,070,678.41
  5. Step 5: Solve for x
    x = 8,070,678.41/3,080.20
  6. Step 6: Final answer
    x = 2,620.18

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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.