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Finding the Fourth Proportional to 2,706.60, 4,060.05 and 758.95

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Solution

The fourth proportional to 2,706.60, 4,060.05 and 758.95 is: 1,138.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,706.60 : 4,060.05 = 758.95 : x
  2. Step 2: Convert to fraction form
    2,706.60/4,060.05 = 758.95/x
  3. Step 3: Cross multiply
    2,706.60x = 4,060.05 × 758.95
  4. Step 4: Simplify right side
    2,706.60x = 3,081,380.02
  5. Step 5: Solve for x
    x = 3,081,380.02/2,706.60
  6. Step 6: Final answer
    x = 1,138.47

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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.