Home / 7,783.20-11,674.83-1,939.80

Finding the Fourth Proportional to 7,783.20, 11,674.83 and 1,939.80

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Solution

The fourth proportional to 7,783.20, 11,674.83 and 1,939.80 is: 2,909.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,783.20 : 11,674.83 = 1,939.80 : x
  2. Step 2: Convert to fraction form
    7,783.20/11,674.83 = 1,939.80/x
  3. Step 3: Cross multiply
    7,783.20x = 11,674.83 × 1,939.80
  4. Step 4: Simplify right side
    7,783.20x = 22,646,835.23
  5. Step 5: Solve for x
    x = 22,646,835.23/7,783.20
  6. Step 6: Final answer
    x = 2,909.71

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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.