Home / 3,106.37-4,286.84-1,690.08

Finding the Fourth Proportional to 3,106.37, 4,286.84 and 1,690.08

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Solution

The fourth proportional to 3,106.37, 4,286.84 and 1,690.08 is: 2,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.37 : 4,286.84 = 1,690.08 : x
  2. Step 2: Convert to fraction form
    3,106.37/4,286.84 = 1,690.08/x
  3. Step 3: Cross multiply
    3,106.37x = 4,286.84 × 1,690.08
  4. Step 4: Simplify right side
    3,106.37x = 7,245,094.10
  5. Step 5: Solve for x
    x = 7,245,094.10/3,106.37
  6. Step 6: Final answer
    x = 2,332.34

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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.