Home / 3,468.62-5,205.43-1,389.20

Finding the Fourth Proportional to 3,468.62, 5,205.43 and 1,389.20

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Solution

The fourth proportional to 3,468.62, 5,205.43 and 1,389.20 is: 2,084.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,468.62 : 5,205.43 = 1,389.20 : x
  2. Step 2: Convert to fraction form
    3,468.62/5,205.43 = 1,389.20/x
  3. Step 3: Cross multiply
    3,468.62x = 5,205.43 × 1,389.20
  4. Step 4: Simplify right side
    3,468.62x = 7,231,383.36
  5. Step 5: Solve for x
    x = 7,231,383.36/3,468.62
  6. Step 6: Final answer
    x = 2,084.80

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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.