Home / 3,910.56-5,396.64-2,142.18

Finding the Fourth Proportional to 3,910.56, 5,396.64 and 2,142.18

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Solution

The fourth proportional to 3,910.56, 5,396.64 and 2,142.18 is: 2,956.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.56 : 5,396.64 = 2,142.18 : x
  2. Step 2: Convert to fraction form
    3,910.56/5,396.64 = 2,142.18/x
  3. Step 3: Cross multiply
    3,910.56x = 5,396.64 × 2,142.18
  4. Step 4: Simplify right side
    3,910.56x = 11,560,574.28
  5. Step 5: Solve for x
    x = 11,560,574.28/3,910.56
  6. Step 6: Final answer
    x = 2,956.25

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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.