Home / 3,106.36-4,286.78-1,709.08

Finding the Fourth Proportional to 3,106.36, 4,286.78 and 1,709.08

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Solution

The fourth proportional to 3,106.36, 4,286.78 and 1,709.08 is: 2,358.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.36 : 4,286.78 = 1,709.08 : x
  2. Step 2: Convert to fraction form
    3,106.36/4,286.78 = 1,709.08/x
  3. Step 3: Cross multiply
    3,106.36x = 4,286.78 × 1,709.08
  4. Step 4: Simplify right side
    3,106.36x = 7,326,449.96
  5. Step 5: Solve for x
    x = 7,326,449.96/3,106.36
  6. Step 6: Final answer
    x = 2,358.53

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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.