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Finding the Fourth Proportional to 3,847.76, 5,769.56 and 1,994.27

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Solution

The fourth proportional to 3,847.76, 5,769.56 and 1,994.27 is: 2,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.76 : 5,769.56 = 1,994.27 : x
  2. Step 2: Convert to fraction form
    3,847.76/5,769.56 = 1,994.27/x
  3. Step 3: Cross multiply
    3,847.76x = 5,769.56 × 1,994.27
  4. Step 4: Simplify right side
    3,847.76x = 11,506,079.83
  5. Step 5: Solve for x
    x = 11,506,079.83/3,847.76
  6. Step 6: Final answer
    x = 2,990.34

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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.