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Finding the Fourth Proportional to 2,072.48, 3,108.62 and 773.85

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Solution

The fourth proportional to 2,072.48, 3,108.62 and 773.85 is: 1,160.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.48 : 3,108.62 = 773.85 : x
  2. Step 2: Convert to fraction form
    2,072.48/3,108.62 = 773.85/x
  3. Step 3: Cross multiply
    2,072.48x = 3,108.62 × 773.85
  4. Step 4: Simplify right side
    2,072.48x = 2,405,601.72
  5. Step 5: Solve for x
    x = 2,405,601.72/2,072.48
  6. Step 6: Final answer
    x = 1,160.74

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1.5x scale

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.