Home / 3,106.38-4,286.73-1,690.03

Finding the Fourth Proportional to 3,106.38, 4,286.73 and 1,690.03

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Solution

The fourth proportional to 3,106.38, 4,286.73 and 1,690.03 is: 2,332.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.38 : 4,286.73 = 1,690.03 : x
  2. Step 2: Convert to fraction form
    3,106.38/4,286.73 = 1,690.03/x
  3. Step 3: Cross multiply
    3,106.38x = 4,286.73 × 1,690.03
  4. Step 4: Simplify right side
    3,106.38x = 7,244,702.30
  5. Step 5: Solve for x
    x = 7,244,702.30/3,106.38
  6. Step 6: Final answer
    x = 2,332.20

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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.