Home / 3,112.72-4,296.05-1,993.60

Finding the Fourth Proportional to 3,112.72, 4,296.05 and 1,993.60

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Solution

The fourth proportional to 3,112.72, 4,296.05 and 1,993.60 is: 2,751.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.72 : 4,296.05 = 1,993.60 : x
  2. Step 2: Convert to fraction form
    3,112.72/4,296.05 = 1,993.60/x
  3. Step 3: Cross multiply
    3,112.72x = 4,296.05 × 1,993.60
  4. Step 4: Simplify right side
    3,112.72x = 8,564,573.83
  5. Step 5: Solve for x
    x = 8,564,573.83/3,112.72
  6. Step 6: Final answer
    x = 2,751.48

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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.