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Finding the Fourth Proportional to 3,997.17, 5,995.80 and 1,918.80

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Solution

The fourth proportional to 3,997.17, 5,995.80 and 1,918.80 is: 2,878.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.17 : 5,995.80 = 1,918.80 : x
  2. Step 2: Convert to fraction form
    3,997.17/5,995.80 = 1,918.80/x
  3. Step 3: Cross multiply
    3,997.17x = 5,995.80 × 1,918.80
  4. Step 4: Simplify right side
    3,997.17x = 11,504,741.04
  5. Step 5: Solve for x
    x = 11,504,741.04/3,997.17
  6. Step 6: Final answer
    x = 2,878.22

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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.