Home / 7,783.24-11,674.70-1,939.90

Finding the Fourth Proportional to 7,783.24, 11,674.70 and 1,939.90

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Solution

The fourth proportional to 7,783.24, 11,674.70 and 1,939.90 is: 2,909.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,783.24 : 11,674.70 = 1,939.90 : x
  2. Step 2: Convert to fraction form
    7,783.24/11,674.70 = 1,939.90/x
  3. Step 3: Cross multiply
    7,783.24x = 11,674.70 × 1,939.90
  4. Step 4: Simplify right side
    7,783.24x = 22,647,750.53
  5. Step 5: Solve for x
    x = 22,647,750.53/7,783.24
  6. Step 6: Final answer
    x = 2,909.81

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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.