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Finding the Fourth Proportional to 3,751.70, 5,177.66 and 2,179.70

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Solution

The fourth proportional to 3,751.70, 5,177.66 and 2,179.70 is: 3,008.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,751.70 : 5,177.66 = 2,179.70 : x
  2. Step 2: Convert to fraction form
    3,751.70/5,177.66 = 2,179.70/x
  3. Step 3: Cross multiply
    3,751.70x = 5,177.66 × 2,179.70
  4. Step 4: Simplify right side
    3,751.70x = 11,285,745.50
  5. Step 5: Solve for x
    x = 11,285,745.50/3,751.70
  6. Step 6: Final answer
    x = 3,008.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.