Home / 6,072.80-8,380.31-3,420.21

Finding the Fourth Proportional to 6,072.80, 8,380.31 and 3,420.21

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Solution

The fourth proportional to 6,072.80, 8,380.31 and 3,420.21 is: 4,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,072.80 : 8,380.31 = 3,420.21 : x
  2. Step 2: Convert to fraction form
    6,072.80/8,380.31 = 3,420.21/x
  3. Step 3: Cross multiply
    6,072.80x = 8,380.31 × 3,420.21
  4. Step 4: Simplify right side
    6,072.80x = 28,662,402.96
  5. Step 5: Solve for x
    x = 28,662,402.96/6,072.80
  6. Step 6: Final answer
    x = 4,719.80

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Half scale
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Double scale
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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.