Home / 4,801.90-6,629.68-3,919.80

Finding the Fourth Proportional to 4,801.90, 6,629.68 and 3,919.80

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Solution

The fourth proportional to 4,801.90, 6,629.68 and 3,919.80 is: 5,411.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,801.90 : 6,629.68 = 3,919.80 : x
  2. Step 2: Convert to fraction form
    4,801.90/6,629.68 = 3,919.80/x
  3. Step 3: Cross multiply
    4,801.90x = 6,629.68 × 3,919.80
  4. Step 4: Simplify right side
    4,801.90x = 25,987,019.66
  5. Step 5: Solve for x
    x = 25,987,019.66/4,801.90
  6. Step 6: Final answer
    x = 5,411.82

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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.