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Finding the Fourth Proportional to 1,997.10, 2,995.79 and 1,265.67

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Solution

The fourth proportional to 1,997.10, 2,995.79 and 1,265.67 is: 1,898.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.10 : 2,995.79 = 1,265.67 : x
  2. Step 2: Convert to fraction form
    1,997.10/2,995.79 = 1,265.67/x
  3. Step 3: Cross multiply
    1,997.10x = 2,995.79 × 1,265.67
  4. Step 4: Simplify right side
    1,997.10x = 3,791,675.20
  5. Step 5: Solve for x
    x = 3,791,675.20/1,997.10
  6. Step 6: Final answer
    x = 1,898.59

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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.