Home / 7,965.20-11,947.34-3,808.07

Finding the Fourth Proportional to 7,965.20, 11,947.34 and 3,808.07

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Solution

The fourth proportional to 7,965.20, 11,947.34 and 3,808.07 is: 5,711.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.20 : 11,947.34 = 3,808.07 : x
  2. Step 2: Convert to fraction form
    7,965.20/11,947.34 = 3,808.07/x
  3. Step 3: Cross multiply
    7,965.20x = 11,947.34 × 3,808.07
  4. Step 4: Simplify right side
    7,965.20x = 45,496,317.86
  5. Step 5: Solve for x
    x = 45,496,317.86/7,965.20
  6. Step 6: Final answer
    x = 5,711.89

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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.