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Finding the Fourth Proportional to 3,331.94, 4,998.90 and 992.02

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Solution

The fourth proportional to 3,331.94, 4,998.90 and 992.02 is: 1,488.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,331.94 : 4,998.90 = 992.02 : x
  2. Step 2: Convert to fraction form
    3,331.94/4,998.90 = 992.02/x
  3. Step 3: Cross multiply
    3,331.94x = 4,998.90 × 992.02
  4. Step 4: Simplify right side
    3,331.94x = 4,959,003.79
  5. Step 5: Solve for x
    x = 4,959,003.79/3,331.94
  6. Step 6: Final answer
    x = 1,488.33

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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.