Home / 8,269.20-12,405.60-2,721.60

Finding the Fourth Proportional to 8,269.20, 12,405.60 and 2,721.60

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Solution

The fourth proportional to 8,269.20, 12,405.60 and 2,721.60 is: 4,082.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,269.20 : 12,405.60 = 2,721.60 : x
  2. Step 2: Convert to fraction form
    8,269.20/12,405.60 = 2,721.60/x
  3. Step 3: Cross multiply
    8,269.20x = 12,405.60 × 2,721.60
  4. Step 4: Simplify right side
    8,269.20x = 33,763,080.96
  5. Step 5: Solve for x
    x = 33,763,080.96/8,269.20
  6. Step 6: Final answer
    x = 4,082.99

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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.