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Finding the Fourth Proportional to 3,106, 4,286.28 and 1,708.88

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Solution

The fourth proportional to 3,106, 4,286.28 and 1,708.88 is: 2,358.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106 : 4,286.28 = 1,708.88 : x
  2. Step 2: Convert to fraction form
    3,106/4,286.28 = 1,708.88/x
  3. Step 3: Cross multiply
    3,106x = 4,286.28 × 1,708.88
  4. Step 4: Simplify right side
    3,106x = 7,324,738.17
  5. Step 5: Solve for x
    x = 7,324,738.17/3,106
  6. Step 6: Final answer
    x = 2,358.25

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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.