Home / 8,318.78-11,481.38-4,961.80

Finding the Fourth Proportional to 8,318.78, 11,481.38 and 4,961.80

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Solution

The fourth proportional to 8,318.78, 11,481.38 and 4,961.80 is: 6,848.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.78 : 11,481.38 = 4,961.80 : x
  2. Step 2: Convert to fraction form
    8,318.78/11,481.38 = 4,961.80/x
  3. Step 3: Cross multiply
    8,318.78x = 11,481.38 × 4,961.80
  4. Step 4: Simplify right side
    8,318.78x = 56,968,311.28
  5. Step 5: Solve for x
    x = 56,968,311.28/8,318.78
  6. Step 6: Final answer
    x = 6,848.16

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1.5x scale

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.