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Finding the Fourth Proportional to 3,994.06, 5,991.97 and 1,220.95

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Solution

The fourth proportional to 3,994.06, 5,991.97 and 1,220.95 is: 1,831.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.06 : 5,991.97 = 1,220.95 : x
  2. Step 2: Convert to fraction form
    3,994.06/5,991.97 = 1,220.95/x
  3. Step 3: Cross multiply
    3,994.06x = 5,991.97 × 1,220.95
  4. Step 4: Simplify right side
    3,994.06x = 7,315,877.74
  5. Step 5: Solve for x
    x = 7,315,877.74/3,994.06
  6. Step 6: Final answer
    x = 1,831.69

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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.