Home / 7,721.73-11,573.48-2,787.62

Finding the Fourth Proportional to 7,721.73, 11,573.48 and 2,787.62

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Solution

The fourth proportional to 7,721.73, 11,573.48 and 2,787.62 is: 4,178.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.73 : 11,573.48 = 2,787.62 : x
  2. Step 2: Convert to fraction form
    7,721.73/11,573.48 = 2,787.62/x
  3. Step 3: Cross multiply
    7,721.73x = 11,573.48 × 2,787.62
  4. Step 4: Simplify right side
    7,721.73x = 32,262,413.42
  5. Step 5: Solve for x
    x = 32,262,413.42/7,721.73
  6. Step 6: Final answer
    x = 4,178.13

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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.