Home / 1,997.16-2,991.62-1,172.94

Finding the Fourth Proportional to 1,997.16, 2,991.62 and 1,172.94

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Solution

The fourth proportional to 1,997.16, 2,991.62 and 1,172.94 is: 1,756.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.16 : 2,991.62 = 1,172.94 : x
  2. Step 2: Convert to fraction form
    1,997.16/2,991.62 = 1,172.94/x
  3. Step 3: Cross multiply
    1,997.16x = 2,991.62 × 1,172.94
  4. Step 4: Simplify right side
    1,997.16x = 3,508,990.76
  5. Step 5: Solve for x
    x = 3,508,990.76/1,997.16
  6. Step 6: Final answer
    x = 1,756.99

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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.