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Finding the Fourth Proportional to 3,994.85, 5,980.97 and 2,116.46

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Solution

The fourth proportional to 3,994.85, 5,980.97 and 2,116.46 is: 3,168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.85 : 5,980.97 = 2,116.46 : x
  2. Step 2: Convert to fraction form
    3,994.85/5,980.97 = 2,116.46/x
  3. Step 3: Cross multiply
    3,994.85x = 5,980.97 × 2,116.46
  4. Step 4: Simplify right side
    3,994.85x = 12,658,504.01
  5. Step 5: Solve for x
    x = 12,658,504.01/3,994.85
  6. Step 6: Final answer
    x = 3,168.70

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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.