Home / 5,119.20-7,678.80-4,195.80

Finding the Fourth Proportional to 5,119.20, 7,678.80 and 4,195.80

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Solution

The fourth proportional to 5,119.20, 7,678.80 and 4,195.80 is: 6,293.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.20 : 7,678.80 = 4,195.80 : x
  2. Step 2: Convert to fraction form
    5,119.20/7,678.80 = 4,195.80/x
  3. Step 3: Cross multiply
    5,119.20x = 7,678.80 × 4,195.80
  4. Step 4: Simplify right side
    5,119.20x = 32,218,709.04
  5. Step 5: Solve for x
    x = 32,218,709.04/5,119.20
  6. Step 6: Final answer
    x = 6,293.70

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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.