Home / 2,816.90-4,229.40-1,998.80

Finding the Fourth Proportional to 2,816.90, 4,229.40 and 1,998.80

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Solution

The fourth proportional to 2,816.90, 4,229.40 and 1,998.80 is: 3,001.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.90 : 4,229.40 = 1,998.80 : x
  2. Step 2: Convert to fraction form
    2,816.90/4,229.40 = 1,998.80/x
  3. Step 3: Cross multiply
    2,816.90x = 4,229.40 × 1,998.80
  4. Step 4: Simplify right side
    2,816.90x = 8,453,724.72
  5. Step 5: Solve for x
    x = 8,453,724.72/2,816.90
  6. Step 6: Final answer
    x = 3,001.07

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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.