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Finding the Fourth Proportional to 3,893.06, 5,811.21 and 3,400.99

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Solution

The fourth proportional to 3,893.06, 5,811.21 and 3,400.99 is: 5,076.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.06 : 5,811.21 = 3,400.99 : x
  2. Step 2: Convert to fraction form
    3,893.06/5,811.21 = 3,400.99/x
  3. Step 3: Cross multiply
    3,893.06x = 5,811.21 × 3,400.99
  4. Step 4: Simplify right side
    3,893.06x = 19,763,852.57
  5. Step 5: Solve for x
    x = 19,763,852.57/3,893.06
  6. Step 6: Final answer
    x = 5,076.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.