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Finding the Fourth Proportional to 2,706.30, 4,059.44 and 758.45

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Solution

The fourth proportional to 2,706.30, 4,059.44 and 758.45 is: 1,137.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,706.30 : 4,059.44 = 758.45 : x
  2. Step 2: Convert to fraction form
    2,706.30/4,059.44 = 758.45/x
  3. Step 3: Cross multiply
    2,706.30x = 4,059.44 × 758.45
  4. Step 4: Simplify right side
    2,706.30x = 3,078,858.18
  5. Step 5: Solve for x
    x = 3,078,858.18/2,706.30
  6. Step 6: Final answer
    x = 1,137.66

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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.