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Finding the Fourth Proportional to 2,505.48, 3,455.37 and 1,620.42

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Solution

The fourth proportional to 2,505.48, 3,455.37 and 1,620.42 is: 2,234.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.48 : 3,455.37 = 1,620.42 : x
  2. Step 2: Convert to fraction form
    2,505.48/3,455.37 = 1,620.42/x
  3. Step 3: Cross multiply
    2,505.48x = 3,455.37 × 1,620.42
  4. Step 4: Simplify right side
    2,505.48x = 5,599,150.66
  5. Step 5: Solve for x
    x = 5,599,150.66/2,505.48
  6. Step 6: Final answer
    x = 2,234.76

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