Home / 2,998.40-4,136.66-2,993.78

Finding the Fourth Proportional to 2,998.40, 4,136.66 and 2,993.78

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Solution

The fourth proportional to 2,998.40, 4,136.66 and 2,993.78 is: 4,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.40 : 4,136.66 = 2,993.78 : x
  2. Step 2: Convert to fraction form
    2,998.40/4,136.66 = 2,993.78/x
  3. Step 3: Cross multiply
    2,998.40x = 4,136.66 × 2,993.78
  4. Step 4: Simplify right side
    2,998.40x = 12,384,249.97
  5. Step 5: Solve for x
    x = 12,384,249.97/2,998.40
  6. Step 6: Final answer
    x = 4,130.29

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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.