Home / 3,112.12-4,294.24-1,994.05

Finding the Fourth Proportional to 3,112.12, 4,294.24 and 1,994.05

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Solution

The fourth proportional to 3,112.12, 4,294.24 and 1,994.05 is: 2,751.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.12 : 4,294.24 = 1,994.05 : x
  2. Step 2: Convert to fraction form
    3,112.12/4,294.24 = 1,994.05/x
  3. Step 3: Cross multiply
    3,112.12x = 4,294.24 × 1,994.05
  4. Step 4: Simplify right side
    3,112.12x = 8,562,929.27
  5. Step 5: Solve for x
    x = 8,562,929.27/3,112.12
  6. Step 6: Final answer
    x = 2,751.48

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Half scale
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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.