Home / 3,910.99-5,397.18-2,142.61

Finding the Fourth Proportional to 3,910.99, 5,397.18 and 2,142.61

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Solution

The fourth proportional to 3,910.99, 5,397.18 and 2,142.61 is: 2,956.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.99 : 5,397.18 = 2,142.61 : x
  2. Step 2: Convert to fraction form
    3,910.99/5,397.18 = 2,142.61/x
  3. Step 3: Cross multiply
    3,910.99x = 5,397.18 × 2,142.61
  4. Step 4: Simplify right side
    3,910.99x = 11,564,051.84
  5. Step 5: Solve for x
    x = 11,564,051.84/3,910.99
  6. Step 6: Final answer
    x = 2,956.81

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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.