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Finding the Fourth Proportional to 3,952.67, 5,455.08 and 3,394.98

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Solution

The fourth proportional to 3,952.67, 5,455.08 and 3,394.98 is: 4,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,952.67 : 5,455.08 = 3,394.98 : x
  2. Step 2: Convert to fraction form
    3,952.67/5,455.08 = 3,394.98/x
  3. Step 3: Cross multiply
    3,952.67x = 5,455.08 × 3,394.98
  4. Step 4: Simplify right side
    3,952.67x = 18,519,887.50
  5. Step 5: Solve for x
    x = 18,519,887.50/3,952.67
  6. Step 6: Final answer
    x = 4,685.42

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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.