Home / 8,112.80-11,166.56-6,771.36

Finding the Fourth Proportional to 8,112.80, 11,166.56 and 6,771.36

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Solution

The fourth proportional to 8,112.80, 11,166.56 and 6,771.36 is: 9,320.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.80 : 11,166.56 = 6,771.36 : x
  2. Step 2: Convert to fraction form
    8,112.80/11,166.56 = 6,771.36/x
  3. Step 3: Cross multiply
    8,112.80x = 11,166.56 × 6,771.36
  4. Step 4: Simplify right side
    8,112.80x = 75,612,797.72
  5. Step 5: Solve for x
    x = 75,612,797.72/8,112.80
  6. Step 6: Final answer
    x = 9,320.19

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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.