Home / 6,072.70-8,380.45-3,420.10

Finding the Fourth Proportional to 6,072.70, 8,380.45 and 3,420.10

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Solution

The fourth proportional to 6,072.70, 8,380.45 and 3,420.10 is: 4,719.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,072.70 : 8,380.45 = 3,420.10 : x
  2. Step 2: Convert to fraction form
    6,072.70/8,380.45 = 3,420.10/x
  3. Step 3: Cross multiply
    6,072.70x = 8,380.45 × 3,420.10
  4. Step 4: Simplify right side
    6,072.70x = 28,661,977.05
  5. Step 5: Solve for x
    x = 28,661,977.05/6,072.70
  6. Step 6: Final answer
    x = 4,719.81

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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.