Home / 6,072.85-8,380.37-3,420.20

Finding the Fourth Proportional to 6,072.85, 8,380.37 and 3,420.20

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Solution

The fourth proportional to 6,072.85, 8,380.37 and 3,420.20 is: 4,719.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,072.85 : 8,380.37 = 3,420.20 : x
  2. Step 2: Convert to fraction form
    6,072.85/8,380.37 = 3,420.20/x
  3. Step 3: Cross multiply
    6,072.85x = 8,380.37 × 3,420.20
  4. Step 4: Simplify right side
    6,072.85x = 28,662,524.37
  5. Step 5: Solve for x
    x = 28,662,524.37/6,072.85
  6. Step 6: Final answer
    x = 4,719.78

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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.