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Finding the Fourth Proportional to 3,995.97, 5,984.89 and 1,917.51

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Solution

The fourth proportional to 3,995.97, 5,984.89 and 1,917.51 is: 2,871.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.97 : 5,984.89 = 1,917.51 : x
  2. Step 2: Convert to fraction form
    3,995.97/5,984.89 = 1,917.51/x
  3. Step 3: Cross multiply
    3,995.97x = 5,984.89 × 1,917.51
  4. Step 4: Simplify right side
    3,995.97x = 11,476,059.19
  5. Step 5: Solve for x
    x = 11,476,059.19/3,995.97
  6. Step 6: Final answer
    x = 2,871.91

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.