Home / 3,491.20-5,238.58-1,930.90

Finding the Fourth Proportional to 3,491.20, 5,238.58 and 1,930.90

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Solution

The fourth proportional to 3,491.20, 5,238.58 and 1,930.90 is: 2,897.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.20 : 5,238.58 = 1,930.90 : x
  2. Step 2: Convert to fraction form
    3,491.20/5,238.58 = 1,930.90/x
  3. Step 3: Cross multiply
    3,491.20x = 5,238.58 × 1,930.90
  4. Step 4: Simplify right side
    3,491.20x = 10,115,174.12
  5. Step 5: Solve for x
    x = 10,115,174.12/3,491.20
  6. Step 6: Final answer
    x = 2,897.33

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1.5x scale

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.