Home / 8,628.06-11,879.45-7,839.75

Finding the Fourth Proportional to 8,628.06, 11,879.45 and 7,839.75

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Solution

The fourth proportional to 8,628.06, 11,879.45 and 7,839.75 is: 10,794.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.06 : 11,879.45 = 7,839.75 : x
  2. Step 2: Convert to fraction form
    8,628.06/11,879.45 = 7,839.75/x
  3. Step 3: Cross multiply
    8,628.06x = 11,879.45 × 7,839.75
  4. Step 4: Simplify right side
    8,628.06x = 93,131,878.94
  5. Step 5: Solve for x
    x = 93,131,878.94/8,628.06
  6. Step 6: Final answer
    x = 10,794.07

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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.