Home / 6,786.26-9,355.40-4,990.56

Finding the Fourth Proportional to 6,786.26, 9,355.40 and 4,990.56

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Solution

The fourth proportional to 6,786.26, 9,355.40 and 4,990.56 is: 6,879.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,786.26 : 9,355.40 = 4,990.56 : x
  2. Step 2: Convert to fraction form
    6,786.26/9,355.40 = 4,990.56/x
  3. Step 3: Cross multiply
    6,786.26x = 9,355.40 × 4,990.56
  4. Step 4: Simplify right side
    6,786.26x = 46,688,660.07
  5. Step 5: Solve for x
    x = 46,688,660.07/6,786.26
  6. Step 6: Final answer
    x = 6,879.89

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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.