Home / 3,106.16-4,286.46-1,689.84

Finding the Fourth Proportional to 3,106.16, 4,286.46 and 1,689.84

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Solution

The fourth proportional to 3,106.16, 4,286.46 and 1,689.84 is: 2,331.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.16 : 4,286.46 = 1,689.84 : x
  2. Step 2: Convert to fraction form
    3,106.16/4,286.46 = 1,689.84/x
  3. Step 3: Cross multiply
    3,106.16x = 4,286.46 × 1,689.84
  4. Step 4: Simplify right side
    3,106.16x = 7,243,431.57
  5. Step 5: Solve for x
    x = 7,243,431.57/3,106.16
  6. Step 6: Final answer
    x = 2,331.96

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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.