Home / 4,216.20-6,327.90-1,879.80

Finding the Fourth Proportional to 4,216.20, 6,327.90 and 1,879.80

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Solution

The fourth proportional to 4,216.20, 6,327.90 and 1,879.80 is: 2,821.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,216.20 : 6,327.90 = 1,879.80 : x
  2. Step 2: Convert to fraction form
    4,216.20/6,327.90 = 1,879.80/x
  3. Step 3: Cross multiply
    4,216.20x = 6,327.90 × 1,879.80
  4. Step 4: Simplify right side
    4,216.20x = 11,895,186.42
  5. Step 5: Solve for x
    x = 11,895,186.42/4,216.20
  6. Step 6: Final answer
    x = 2,821.31

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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.