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Finding the Fourth Proportional to 3,653.56, 5,481.78 and 1,345.24

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Solution

The fourth proportional to 3,653.56, 5,481.78 and 1,345.24 is: 2,018.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.56 : 5,481.78 = 1,345.24 : x
  2. Step 2: Convert to fraction form
    3,653.56/5,481.78 = 1,345.24/x
  3. Step 3: Cross multiply
    3,653.56x = 5,481.78 × 1,345.24
  4. Step 4: Simplify right side
    3,653.56x = 7,374,309.73
  5. Step 5: Solve for x
    x = 7,374,309.73/3,653.56
  6. Step 6: Final answer
    x = 2,018.39

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1.5x scale

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.