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Finding the Fourth Proportional to 6,072.89, 8,379.12 and 3,420.30

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Solution

The fourth proportional to 6,072.89, 8,379.12 and 3,420.30 is: 4,719.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,072.89 : 8,379.12 = 3,420.30 : x
  2. Step 2: Convert to fraction form
    6,072.89/8,379.12 = 3,420.30/x
  3. Step 3: Cross multiply
    6,072.89x = 8,379.12 × 3,420.30
  4. Step 4: Simplify right side
    6,072.89x = 28,659,101.25
  5. Step 5: Solve for x
    x = 28,659,101.25/6,072.89
  6. Step 6: Final answer
    x = 4,719.19

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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.