Home / 3,712.43-5,120.31-2,717.35

Finding the Fourth Proportional to 3,712.43, 5,120.31 and 2,717.35

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Solution

The fourth proportional to 3,712.43, 5,120.31 and 2,717.35 is: 3,747.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.43 : 5,120.31 = 2,717.35 : x
  2. Step 2: Convert to fraction form
    3,712.43/5,120.31 = 2,717.35/x
  3. Step 3: Cross multiply
    3,712.43x = 5,120.31 × 2,717.35
  4. Step 4: Simplify right side
    3,712.43x = 13,913,671.77
  5. Step 5: Solve for x
    x = 13,913,671.77/3,712.43
  6. Step 6: Final answer
    x = 3,747.86

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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.