Home / 5,190.24-7,784.88-2,112

Finding the Fourth Proportional to 5,190.24, 7,784.88 and 2,112

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Solution

The fourth proportional to 5,190.24, 7,784.88 and 2,112 is: 3,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.24 : 7,784.88 = 2,112 : x
  2. Step 2: Convert to fraction form
    5,190.24/7,784.88 = 2,112/x
  3. Step 3: Cross multiply
    5,190.24x = 7,784.88 × 2,112
  4. Step 4: Simplify right side
    5,190.24x = 16,441,666.56
  5. Step 5: Solve for x
    x = 16,441,666.56/5,190.24
  6. Step 6: Final answer
    x = 3,167.80

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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.