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Finding the Fourth Proportional to 3,618.37, 5,379.92 and 3,470.75

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Solution

The fourth proportional to 3,618.37, 5,379.92 and 3,470.75 is: 5,160.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.37 : 5,379.92 = 3,470.75 : x
  2. Step 2: Convert to fraction form
    3,618.37/5,379.92 = 3,470.75/x
  3. Step 3: Cross multiply
    3,618.37x = 5,379.92 × 3,470.75
  4. Step 4: Simplify right side
    3,618.37x = 18,672,346.28
  5. Step 5: Solve for x
    x = 18,672,346.28/3,618.37
  6. Step 6: Final answer
    x = 5,160.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.