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Finding the Fourth Proportional to 3,660.78, 5,478.41 and 2,994.96

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Solution

The fourth proportional to 3,660.78, 5,478.41 and 2,994.96 is: 4,482.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.78 : 5,478.41 = 2,994.96 : x
  2. Step 2: Convert to fraction form
    3,660.78/5,478.41 = 2,994.96/x
  3. Step 3: Cross multiply
    3,660.78x = 5,478.41 × 2,994.96
  4. Step 4: Simplify right side
    3,660.78x = 16,407,618.81
  5. Step 5: Solve for x
    x = 16,407,618.81/3,660.78
  6. Step 6: Final answer
    x = 4,482.00

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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.