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Finding the Fourth Proportional to 3,619.78, 4,998.42 and 2,295.85

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Solution

The fourth proportional to 3,619.78, 4,998.42 and 2,295.85 is: 3,170.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.78 : 4,998.42 = 2,295.85 : x
  2. Step 2: Convert to fraction form
    3,619.78/4,998.42 = 2,295.85/x
  3. Step 3: Cross multiply
    3,619.78x = 4,998.42 × 2,295.85
  4. Step 4: Simplify right side
    3,619.78x = 11,475,622.56
  5. Step 5: Solve for x
    x = 11,475,622.56/3,619.78
  6. Step 6: Final answer
    x = 3,170.25

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1.5x scale

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.