Home / 3,900.38-5,379.99-2,626.45

Finding the Fourth Proportional to 3,900.38, 5,379.99 and 2,626.45

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Solution

The fourth proportional to 3,900.38, 5,379.99 and 2,626.45 is: 3,622.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.38 : 5,379.99 = 2,626.45 : x
  2. Step 2: Convert to fraction form
    3,900.38/5,379.99 = 2,626.45/x
  3. Step 3: Cross multiply
    3,900.38x = 5,379.99 × 2,626.45
  4. Step 4: Simplify right side
    3,900.38x = 14,130,251.44
  5. Step 5: Solve for x
    x = 14,130,251.44/3,900.38
  6. Step 6: Final answer
    x = 3,622.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.