Home / 8,112.98-12,153.68-5,331.27

Finding the Fourth Proportional to 8,112.98, 12,153.68 and 5,331.27

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Solution

The fourth proportional to 8,112.98, 12,153.68 and 5,331.27 is: 7,986.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.98 : 12,153.68 = 5,331.27 : x
  2. Step 2: Convert to fraction form
    8,112.98/12,153.68 = 5,331.27/x
  3. Step 3: Cross multiply
    8,112.98x = 12,153.68 × 5,331.27
  4. Step 4: Simplify right side
    8,112.98x = 64,794,562.90
  5. Step 5: Solve for x
    x = 64,794,562.90/8,112.98
  6. Step 6: Final answer
    x = 7,986.54

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1.5x scale

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.