Home / 8,921.44-12,311.70-5,383.97

Finding the Fourth Proportional to 8,921.44, 12,311.70 and 5,383.97

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Solution

The fourth proportional to 8,921.44, 12,311.70 and 5,383.97 is: 7,429.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.44 : 12,311.70 = 5,383.97 : x
  2. Step 2: Convert to fraction form
    8,921.44/12,311.70 = 5,383.97/x
  3. Step 3: Cross multiply
    8,921.44x = 12,311.70 × 5,383.97
  4. Step 4: Simplify right side
    8,921.44x = 66,285,787.87
  5. Step 5: Solve for x
    x = 66,285,787.87/8,921.44
  6. Step 6: Final answer
    x = 7,429.94

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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.