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Finding the Fourth Proportional to 3,253.15, 4,879.73 and 787.96

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Solution

The fourth proportional to 3,253.15, 4,879.73 and 787.96 is: 1,181.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,253.15 : 4,879.73 = 787.96 : x
  2. Step 2: Convert to fraction form
    3,253.15/4,879.73 = 787.96/x
  3. Step 3: Cross multiply
    3,253.15x = 4,879.73 × 787.96
  4. Step 4: Simplify right side
    3,253.15x = 3,845,003.71
  5. Step 5: Solve for x
    x = 3,845,003.71/3,253.15
  6. Step 6: Final answer
    x = 1,181.93

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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.