Home / 3,112.61-4,294.99-1,993.65

Finding the Fourth Proportional to 3,112.61, 4,294.99 and 1,993.65

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Solution

The fourth proportional to 3,112.61, 4,294.99 and 1,993.65 is: 2,750.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.61 : 4,294.99 = 1,993.65 : x
  2. Step 2: Convert to fraction form
    3,112.61/4,294.99 = 1,993.65/x
  3. Step 3: Cross multiply
    3,112.61x = 4,294.99 × 1,993.65
  4. Step 4: Simplify right side
    3,112.61x = 8,562,706.81
  5. Step 5: Solve for x
    x = 8,562,706.81/3,112.61
  6. Step 6: Final answer
    x = 2,750.97

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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.