Home / 3,455.87-5,180.90-1,377.41

Finding the Fourth Proportional to 3,455.87, 5,180.90 and 1,377.41

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Solution

The fourth proportional to 3,455.87, 5,180.90 and 1,377.41 is: 2,064.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.87 : 5,180.90 = 1,377.41 : x
  2. Step 2: Convert to fraction form
    3,455.87/5,180.90 = 1,377.41/x
  3. Step 3: Cross multiply
    3,455.87x = 5,180.90 × 1,377.41
  4. Step 4: Simplify right side
    3,455.87x = 7,136,190.68
  5. Step 5: Solve for x
    x = 7,136,190.68/3,455.87
  6. Step 6: Final answer
    x = 2,064.95

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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.