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Finding the Fourth Proportional to 2,706.40, 4,059.60 and 758.35

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Solution

The fourth proportional to 2,706.40, 4,059.60 and 758.35 is: 1,137.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,706.40 : 4,059.60 = 758.35 : x
  2. Step 2: Convert to fraction form
    2,706.40/4,059.60 = 758.35/x
  3. Step 3: Cross multiply
    2,706.40x = 4,059.60 × 758.35
  4. Step 4: Simplify right side
    2,706.40x = 3,078,597.66
  5. Step 5: Solve for x
    x = 3,078,597.66/2,706.40
  6. Step 6: Final answer
    x = 1,137.53

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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.