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Finding the Fourth Proportional to 2,976.68, 4,108.12 and 1,717.79

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Solution

The fourth proportional to 2,976.68, 4,108.12 and 1,717.79 is: 2,370.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.68 : 4,108.12 = 1,717.79 : x
  2. Step 2: Convert to fraction form
    2,976.68/4,108.12 = 1,717.79/x
  3. Step 3: Cross multiply
    2,976.68x = 4,108.12 × 1,717.79
  4. Step 4: Simplify right side
    2,976.68x = 7,056,862.62
  5. Step 5: Solve for x
    x = 7,056,862.62/2,976.68
  6. Step 6: Final answer
    x = 2,370.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.