Home / 7,858.45-11,787.68-2,664.37

Finding the Fourth Proportional to 7,858.45, 11,787.68 and 2,664.37

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Solution

The fourth proportional to 7,858.45, 11,787.68 and 2,664.37 is: 3,996.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858.45 : 11,787.68 = 2,664.37 : x
  2. Step 2: Convert to fraction form
    7,858.45/11,787.68 = 2,664.37/x
  3. Step 3: Cross multiply
    7,858.45x = 11,787.68 × 2,664.37
  4. Step 4: Simplify right side
    7,858.45x = 31,406,740.96
  5. Step 5: Solve for x
    x = 31,406,740.96/7,858.45
  6. Step 6: Final answer
    x = 3,996.56

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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.