Home / 7,680.08-11,521.20-3,299.60

Finding the Fourth Proportional to 7,680.08, 11,521.20 and 3,299.60

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Solution

The fourth proportional to 7,680.08, 11,521.20 and 3,299.60 is: 4,949.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.08 : 11,521.20 = 3,299.60 : x
  2. Step 2: Convert to fraction form
    7,680.08/11,521.20 = 3,299.60/x
  3. Step 3: Cross multiply
    7,680.08x = 11,521.20 × 3,299.60
  4. Step 4: Simplify right side
    7,680.08x = 38,015,351.52
  5. Step 5: Solve for x
    x = 38,015,351.52/7,680.08
  6. Step 6: Final answer
    x = 4,949.86

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1.5x scale

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.