Home / 3,830.05-5,740.21-1,977.58

Finding the Fourth Proportional to 3,830.05, 5,740.21 and 1,977.58

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Solution

The fourth proportional to 3,830.05, 5,740.21 and 1,977.58 is: 2,963.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.05 : 5,740.21 = 1,977.58 : x
  2. Step 2: Convert to fraction form
    3,830.05/5,740.21 = 1,977.58/x
  3. Step 3: Cross multiply
    3,830.05x = 5,740.21 × 1,977.58
  4. Step 4: Simplify right side
    3,830.05x = 11,351,724.49
  5. Step 5: Solve for x
    x = 11,351,724.49/3,830.05
  6. Step 6: Final answer
    x = 2,963.86

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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.