Home / 3,785.20-5,669.70-3,137.20

Finding the Fourth Proportional to 3,785.20, 5,669.70 and 3,137.20

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Solution

The fourth proportional to 3,785.20, 5,669.70 and 3,137.20 is: 4,699.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.20 : 5,669.70 = 3,137.20 : x
  2. Step 2: Convert to fraction form
    3,785.20/5,669.70 = 3,137.20/x
  3. Step 3: Cross multiply
    3,785.20x = 5,669.70 × 3,137.20
  4. Step 4: Simplify right side
    3,785.20x = 17,786,982.84
  5. Step 5: Solve for x
    x = 17,786,982.84/3,785.20
  6. Step 6: Final answer
    x = 4,699.09

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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.