Home / 5,121.32-7,682.00-1,611.18

Finding the Fourth Proportional to 5,121.32, 7,682.00 and 1,611.18

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Solution

The fourth proportional to 5,121.32, 7,682.00 and 1,611.18 is: 2,416.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.32 : 7,682.00 = 1,611.18 : x
  2. Step 2: Convert to fraction form
    5,121.32/7,682.00 = 1,611.18/x
  3. Step 3: Cross multiply
    5,121.32x = 7,682.00 × 1,611.18
  4. Step 4: Simplify right side
    5,121.32x = 12,377,076.70
  5. Step 5: Solve for x
    x = 12,377,076.70/5,121.32
  6. Step 6: Final answer
    x = 2,416.78

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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.