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Finding the Fourth Proportional to 2,778.79, 3,833.64 and 1,714.70

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Solution

The fourth proportional to 2,778.79, 3,833.64 and 1,714.70 is: 2,365.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.79 : 3,833.64 = 1,714.70 : x
  2. Step 2: Convert to fraction form
    2,778.79/3,833.64 = 1,714.70/x
  3. Step 3: Cross multiply
    2,778.79x = 3,833.64 × 1,714.70
  4. Step 4: Simplify right side
    2,778.79x = 6,573,545.66
  5. Step 5: Solve for x
    x = 6,573,545.66/2,778.79
  6. Step 6: Final answer
    x = 2,365.61

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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.