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Finding the Fourth Proportional to 3,326.72, 4,990.85 and 1,661.79

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Solution

The fourth proportional to 3,326.72, 4,990.85 and 1,661.79 is: 2,493.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.72 : 4,990.85 = 1,661.79 : x
  2. Step 2: Convert to fraction form
    3,326.72/4,990.85 = 1,661.79/x
  3. Step 3: Cross multiply
    3,326.72x = 4,990.85 × 1,661.79
  4. Step 4: Simplify right side
    3,326.72x = 8,293,761.26
  5. Step 5: Solve for x
    x = 8,293,761.26/3,326.72
  6. Step 6: Final answer
    x = 2,493.08

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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.