Home / 8,782.80-12,121.43-5,007.33

Finding the Fourth Proportional to 8,782.80, 12,121.43 and 5,007.33

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Solution

The fourth proportional to 8,782.80, 12,121.43 and 5,007.33 is: 6,910.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.80 : 12,121.43 = 5,007.33 : x
  2. Step 2: Convert to fraction form
    8,782.80/12,121.43 = 5,007.33/x
  3. Step 3: Cross multiply
    8,782.80x = 12,121.43 × 5,007.33
  4. Step 4: Simplify right side
    8,782.80x = 60,695,975.05
  5. Step 5: Solve for x
    x = 60,695,975.05/8,782.80
  6. Step 6: Final answer
    x = 6,910.78

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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.