Home / 3,138.58-4,707.04-1,491.85

Finding the Fourth Proportional to 3,138.58, 4,707.04 and 1,491.85

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Solution

The fourth proportional to 3,138.58, 4,707.04 and 1,491.85 is: 2,237.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.58 : 4,707.04 = 1,491.85 : x
  2. Step 2: Convert to fraction form
    3,138.58/4,707.04 = 1,491.85/x
  3. Step 3: Cross multiply
    3,138.58x = 4,707.04 × 1,491.85
  4. Step 4: Simplify right side
    3,138.58x = 7,022,197.62
  5. Step 5: Solve for x
    x = 7,022,197.62/3,138.58
  6. Step 6: Final answer
    x = 2,237.38

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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.