Home / 3,181.22-4,390.09-1,939.22

Finding the Fourth Proportional to 3,181.22, 4,390.09 and 1,939.22

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Solution

The fourth proportional to 3,181.22, 4,390.09 and 1,939.22 is: 2,676.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.22 : 4,390.09 = 1,939.22 : x
  2. Step 2: Convert to fraction form
    3,181.22/4,390.09 = 1,939.22/x
  3. Step 3: Cross multiply
    3,181.22x = 4,390.09 × 1,939.22
  4. Step 4: Simplify right side
    3,181.22x = 8,513,340.63
  5. Step 5: Solve for x
    x = 8,513,340.63/3,181.22
  6. Step 6: Final answer
    x = 2,676.12

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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.