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Finding the Fourth Proportional to 1,691.94, 2,543.70 and 1,369.56

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Solution

The fourth proportional to 1,691.94, 2,543.70 and 1,369.56 is: 2,059.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.94 : 2,543.70 = 1,369.56 : x
  2. Step 2: Convert to fraction form
    1,691.94/2,543.70 = 1,369.56/x
  3. Step 3: Cross multiply
    1,691.94x = 2,543.70 × 1,369.56
  4. Step 4: Simplify right side
    1,691.94x = 3,483,749.77
  5. Step 5: Solve for x
    x = 3,483,749.77/1,691.94
  6. Step 6: Final answer
    x = 2,059.03

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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.