Home / 3,544.20-4,878.10-3,121.80

Finding the Fourth Proportional to 3,544.20, 4,878.10 and 3,121.80

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Solution

The fourth proportional to 3,544.20, 4,878.10 and 3,121.80 is: 4,296.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,544.20 : 4,878.10 = 3,121.80 : x
  2. Step 2: Convert to fraction form
    3,544.20/4,878.10 = 3,121.80/x
  3. Step 3: Cross multiply
    3,544.20x = 4,878.10 × 3,121.80
  4. Step 4: Simplify right side
    3,544.20x = 15,228,452.58
  5. Step 5: Solve for x
    x = 15,228,452.58/3,544.20
  6. Step 6: Final answer
    x = 4,296.72

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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.