Home / 5,416.80-8,100.48-3,940.80

Finding the Fourth Proportional to 5,416.80, 8,100.48 and 3,940.80

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Solution

The fourth proportional to 5,416.80, 8,100.48 and 3,940.80 is: 5,893.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.80 : 8,100.48 = 3,940.80 : x
  2. Step 2: Convert to fraction form
    5,416.80/8,100.48 = 3,940.80/x
  3. Step 3: Cross multiply
    5,416.80x = 8,100.48 × 3,940.80
  4. Step 4: Simplify right side
    5,416.80x = 31,922,371.58
  5. Step 5: Solve for x
    x = 31,922,371.58/5,416.80
  6. Step 6: Final answer
    x = 5,893.22

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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.