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Finding the Fourth Proportional to 1,993.54, 2,747.92 and 1,573.21

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Solution

The fourth proportional to 1,993.54, 2,747.92 and 1,573.21 is: 2,168.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993.54 : 2,747.92 = 1,573.21 : x
  2. Step 2: Convert to fraction form
    1,993.54/2,747.92 = 1,573.21/x
  3. Step 3: Cross multiply
    1,993.54x = 2,747.92 × 1,573.21
  4. Step 4: Simplify right side
    1,993.54x = 4,323,055.22
  5. Step 5: Solve for x
    x = 4,323,055.22/1,993.54
  6. Step 6: Final answer
    x = 2,168.53

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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.