Home / 3,112.94-4,294.58-1,993.62

Finding the Fourth Proportional to 3,112.94, 4,294.58 and 1,993.62

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Solution

The fourth proportional to 3,112.94, 4,294.58 and 1,993.62 is: 2,750.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.94 : 4,294.58 = 1,993.62 : x
  2. Step 2: Convert to fraction form
    3,112.94/4,294.58 = 1,993.62/x
  3. Step 3: Cross multiply
    3,112.94x = 4,294.58 × 1,993.62
  4. Step 4: Simplify right side
    3,112.94x = 8,561,760.58
  5. Step 5: Solve for x
    x = 8,561,760.58/3,112.94
  6. Step 6: Final answer
    x = 2,750.38

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Half scale
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Double 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.