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Finding the Fourth Proportional to 3,197.25, 4,412.25 and 1,955.25

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Solution

The fourth proportional to 3,197.25, 4,412.25 and 1,955.25 is: 2,698.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,197.25 : 4,412.25 = 1,955.25 : x
  2. Step 2: Convert to fraction form
    3,197.25/4,412.25 = 1,955.25/x
  3. Step 3: Cross multiply
    3,197.25x = 4,412.25 × 1,955.25
  4. Step 4: Simplify right side
    3,197.25x = 8,627,051.81
  5. Step 5: Solve for x
    x = 8,627,051.81/3,197.25
  6. Step 6: Final answer
    x = 2,698.27

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Double scale
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Similar ratio
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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.