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Finding the Fourth Proportional to 3,173.70, 4,761.70 and 1,418.56

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Solution

The fourth proportional to 3,173.70, 4,761.70 and 1,418.56 is: 2,128.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173.70 : 4,761.70 = 1,418.56 : x
  2. Step 2: Convert to fraction form
    3,173.70/4,761.70 = 1,418.56/x
  3. Step 3: Cross multiply
    3,173.70x = 4,761.70 × 1,418.56
  4. Step 4: Simplify right side
    3,173.70x = 6,754,768.49
  5. Step 5: Solve for x
    x = 6,754,768.49/3,173.70
  6. Step 6: Final answer
    x = 2,128.36

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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.