Home / 3,745.90-5,619.69-3,378.70

Finding the Fourth Proportional to 3,745.90, 5,619.69 and 3,378.70

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Solution

The fourth proportional to 3,745.90, 5,619.69 and 3,378.70 is: 5,068.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745.90 : 5,619.69 = 3,378.70 : x
  2. Step 2: Convert to fraction form
    3,745.90/5,619.69 = 3,378.70/x
  3. Step 3: Cross multiply
    3,745.90x = 5,619.69 × 3,378.70
  4. Step 4: Simplify right side
    3,745.90x = 18,987,246.60
  5. Step 5: Solve for x
    x = 18,987,246.60/3,745.90
  6. Step 6: Final answer
    x = 5,068.81

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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.