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Finding the Fourth Proportional to 1,953.75, 2,696.22 and 1,208.22

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Solution

The fourth proportional to 1,953.75, 2,696.22 and 1,208.22 is: 1,667.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.75 : 2,696.22 = 1,208.22 : x
  2. Step 2: Convert to fraction form
    1,953.75/2,696.22 = 1,208.22/x
  3. Step 3: Cross multiply
    1,953.75x = 2,696.22 × 1,208.22
  4. Step 4: Simplify right side
    1,953.75x = 3,257,626.93
  5. Step 5: Solve for x
    x = 3,257,626.93/1,953.75
  6. Step 6: Final answer
    x = 1,667.37

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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.