Home / 3,712.14-5,115.68-2,717.72

Finding the Fourth Proportional to 3,712.14, 5,115.68 and 2,717.72

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Solution

The fourth proportional to 3,712.14, 5,115.68 and 2,717.72 is: 3,745.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.14 : 5,115.68 = 2,717.72 : x
  2. Step 2: Convert to fraction form
    3,712.14/5,115.68 = 2,717.72/x
  3. Step 3: Cross multiply
    3,712.14x = 5,115.68 × 2,717.72
  4. Step 4: Simplify right side
    3,712.14x = 13,902,985.85
  5. Step 5: Solve for x
    x = 13,902,985.85/3,712.14
  6. Step 6: Final answer
    x = 3,745.28

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1.5x scale

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.