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Finding the Fourth Proportional to 2,544.08, 3,816.54 and 788.68

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Solution

The fourth proportional to 2,544.08, 3,816.54 and 788.68 is: 1,183.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,544.08 : 3,816.54 = 788.68 : x
  2. Step 2: Convert to fraction form
    2,544.08/3,816.54 = 788.68/x
  3. Step 3: Cross multiply
    2,544.08x = 3,816.54 × 788.68
  4. Step 4: Simplify right side
    2,544.08x = 3,010,028.77
  5. Step 5: Solve for x
    x = 3,010,028.77/2,544.08
  6. Step 6: Final answer
    x = 1,183.15

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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.