Home / 6,731.78-9,288.30-4,078.61

Finding the Fourth Proportional to 6,731.78, 9,288.30 and 4,078.61

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Solution

The fourth proportional to 6,731.78, 9,288.30 and 4,078.61 is: 5,627.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,731.78 : 9,288.30 = 4,078.61 : x
  2. Step 2: Convert to fraction form
    6,731.78/9,288.30 = 4,078.61/x
  3. Step 3: Cross multiply
    6,731.78x = 9,288.30 × 4,078.61
  4. Step 4: Simplify right side
    6,731.78x = 37,883,353.26
  5. Step 5: Solve for x
    x = 37,883,353.26/6,731.78
  6. Step 6: Final answer
    x = 5,627.54

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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.