Home / 3,380.50-4,663.78-2,121.04

Finding the Fourth Proportional to 3,380.50, 4,663.78 and 2,121.04

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Solution

The fourth proportional to 3,380.50, 4,663.78 and 2,121.04 is: 2,926.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.50 : 4,663.78 = 2,121.04 : x
  2. Step 2: Convert to fraction form
    3,380.50/4,663.78 = 2,121.04/x
  3. Step 3: Cross multiply
    3,380.50x = 4,663.78 × 2,121.04
  4. Step 4: Simplify right side
    3,380.50x = 9,892,063.93
  5. Step 5: Solve for x
    x = 9,892,063.93/3,380.50
  6. Step 6: Final answer
    x = 2,926.21

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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.