Home / 3,156.78-4,734.61-1,181.88

Finding the Fourth Proportional to 3,156.78, 4,734.61 and 1,181.88

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Solution

The fourth proportional to 3,156.78, 4,734.61 and 1,181.88 is: 1,772.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.78 : 4,734.61 = 1,181.88 : x
  2. Step 2: Convert to fraction form
    3,156.78/4,734.61 = 1,181.88/x
  3. Step 3: Cross multiply
    3,156.78x = 4,734.61 × 1,181.88
  4. Step 4: Simplify right side
    3,156.78x = 5,595,740.87
  5. Step 5: Solve for x
    x = 5,595,740.87/3,156.78
  6. Step 6: Final answer
    x = 1,772.61

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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.