Home / 4,191.25-6,286.91-1,269.79

Finding the Fourth Proportional to 4,191.25, 6,286.91 and 1,269.79

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Solution

The fourth proportional to 4,191.25, 6,286.91 and 1,269.79 is: 1,904.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,191.25 : 6,286.91 = 1,269.79 : x
  2. Step 2: Convert to fraction form
    4,191.25/6,286.91 = 1,269.79/x
  3. Step 3: Cross multiply
    4,191.25x = 6,286.91 × 1,269.79
  4. Step 4: Simplify right side
    4,191.25x = 7,983,055.45
  5. Step 5: Solve for x
    x = 7,983,055.45/4,191.25
  6. Step 6: Final answer
    x = 1,904.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.