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Finding the Fourth Proportional to 2,815.58, 4,224 and 966.66

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Solution

The fourth proportional to 2,815.58, 4,224 and 966.66 is: 1,450.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.58 : 4,224 = 966.66 : x
  2. Step 2: Convert to fraction form
    2,815.58/4,224 = 966.66/x
  3. Step 3: Cross multiply
    2,815.58x = 4,224 × 966.66
  4. Step 4: Simplify right side
    2,815.58x = 4,083,171.84
  5. Step 5: Solve for x
    x = 4,083,171.84/2,815.58
  6. Step 6: Final answer
    x = 1,450.21

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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.