Home / 7,839.72-11,757.24-4,139.96

Finding the Fourth Proportional to 7,839.72, 11,757.24 and 4,139.96

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Solution

The fourth proportional to 7,839.72, 11,757.24 and 4,139.96 is: 6,208.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.72 : 11,757.24 = 4,139.96 : x
  2. Step 2: Convert to fraction form
    7,839.72/11,757.24 = 4,139.96/x
  3. Step 3: Cross multiply
    7,839.72x = 11,757.24 × 4,139.96
  4. Step 4: Simplify right side
    7,839.72x = 48,674,444.52
  5. Step 5: Solve for x
    x = 48,674,444.52/7,839.72
  6. Step 6: Final answer
    x = 6,208.70

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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.