Home / 3,910.93-5,397.17-2,142.54

Finding the Fourth Proportional to 3,910.93, 5,397.17 and 2,142.54

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Solution

The fourth proportional to 3,910.93, 5,397.17 and 2,142.54 is: 2,956.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.93 : 5,397.17 = 2,142.54 : x
  2. Step 2: Convert to fraction form
    3,910.93/5,397.17 = 2,142.54/x
  3. Step 3: Cross multiply
    3,910.93x = 5,397.17 × 2,142.54
  4. Step 4: Simplify right side
    3,910.93x = 11,563,630.98
  5. Step 5: Solve for x
    x = 11,563,630.98/3,910.93
  6. Step 6: Final answer
    x = 2,956.75

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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.