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Finding the Fourth Proportional to 3,257.05, 4,885.51 and 791.89

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Solution

The fourth proportional to 3,257.05, 4,885.51 and 791.89 is: 1,187.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,257.05 : 4,885.51 = 791.89 : x
  2. Step 2: Convert to fraction form
    3,257.05/4,885.51 = 791.89/x
  3. Step 3: Cross multiply
    3,257.05x = 4,885.51 × 791.89
  4. Step 4: Simplify right side
    3,257.05x = 3,868,786.51
  5. Step 5: Solve for x
    x = 3,868,786.51/3,257.05
  6. Step 6: Final answer
    x = 1,187.82

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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.