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Finding the Fourth Proportional to 2,884.40, 4,326.60 and 936.75

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Solution

The fourth proportional to 2,884.40, 4,326.60 and 936.75 is: 1,405.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,884.40 : 4,326.60 = 936.75 : x
  2. Step 2: Convert to fraction form
    2,884.40/4,326.60 = 936.75/x
  3. Step 3: Cross multiply
    2,884.40x = 4,326.60 × 936.75
  4. Step 4: Simplify right side
    2,884.40x = 4,052,942.55
  5. Step 5: Solve for x
    x = 4,052,942.55/2,884.40
  6. Step 6: Final answer
    x = 1,405.13

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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.