Home / 2,124.82-3,172.47-1,993.60

Finding the Fourth Proportional to 2,124.82, 3,172.47 and 1,993.60

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Solution

The fourth proportional to 2,124.82, 3,172.47 and 1,993.60 is: 2,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.82 : 3,172.47 = 1,993.60 : x
  2. Step 2: Convert to fraction form
    2,124.82/3,172.47 = 1,993.60/x
  3. Step 3: Cross multiply
    2,124.82x = 3,172.47 × 1,993.60
  4. Step 4: Simplify right side
    2,124.82x = 6,324,636.19
  5. Step 5: Solve for x
    x = 6,324,636.19/2,124.82
  6. Step 6: Final answer
    x = 2,976.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.