Home / 4,477.78-6,181.92-2,990.62

Finding the Fourth Proportional to 4,477.78, 6,181.92 and 2,990.62

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Solution

The fourth proportional to 4,477.78, 6,181.92 and 2,990.62 is: 4,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,477.78 : 6,181.92 = 2,990.62 : x
  2. Step 2: Convert to fraction form
    4,477.78/6,181.92 = 2,990.62/x
  3. Step 3: Cross multiply
    4,477.78x = 6,181.92 × 2,990.62
  4. Step 4: Simplify right side
    4,477.78x = 18,487,758.14
  5. Step 5: Solve for x
    x = 18,487,758.14/4,477.78
  6. Step 6: Final answer
    x = 4,128.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.