Home / 8,268-11,415.60-5,787.36

Finding the Fourth Proportional to 8,268, 11,415.60 and 5,787.36

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Solution

The fourth proportional to 8,268, 11,415.60 and 5,787.36 is: 7,990.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,268 : 11,415.60 = 5,787.36 : x
  2. Step 2: Convert to fraction form
    8,268/11,415.60 = 5,787.36/x
  3. Step 3: Cross multiply
    8,268x = 11,415.60 × 5,787.36
  4. Step 4: Simplify right side
    8,268x = 66,066,186.82
  5. Step 5: Solve for x
    x = 66,066,186.82/8,268
  6. Step 6: Final answer
    x = 7,990.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.