Home / 3,880.53-5,820.81-1,107.20

Finding the Fourth Proportional to 3,880.53, 5,820.81 and 1,107.20

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Solution

The fourth proportional to 3,880.53, 5,820.81 and 1,107.20 is: 1,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.53 : 5,820.81 = 1,107.20 : x
  2. Step 2: Convert to fraction form
    3,880.53/5,820.81 = 1,107.20/x
  3. Step 3: Cross multiply
    3,880.53x = 5,820.81 × 1,107.20
  4. Step 4: Simplify right side
    3,880.53x = 6,444,771.73
  5. Step 5: Solve for x
    x = 6,444,771.73/3,880.53
  6. Step 6: Final answer
    x = 1,660.80

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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.