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Finding the Fourth Proportional to 3,365.85, 4,646.12 and 2,891.85

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Solution

The fourth proportional to 3,365.85, 4,646.12 and 2,891.85 is: 3,991.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,365.85 : 4,646.12 = 2,891.85 : x
  2. Step 2: Convert to fraction form
    3,365.85/4,646.12 = 2,891.85/x
  3. Step 3: Cross multiply
    3,365.85x = 4,646.12 × 2,891.85
  4. Step 4: Simplify right side
    3,365.85x = 13,435,882.12
  5. Step 5: Solve for x
    x = 13,435,882.12/3,365.85
  6. Step 6: Final answer
    x = 3,991.82

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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.