Home / 7,813.28-11,723.52-3,920.48

Finding the Fourth Proportional to 7,813.28, 11,723.52 and 3,920.48

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Solution

The fourth proportional to 7,813.28, 11,723.52 and 3,920.48 is: 5,882.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.28 : 11,723.52 = 3,920.48 : x
  2. Step 2: Convert to fraction form
    7,813.28/11,723.52 = 3,920.48/x
  3. Step 3: Cross multiply
    7,813.28x = 11,723.52 × 3,920.48
  4. Step 4: Simplify right side
    7,813.28x = 45,961,825.69
  5. Step 5: Solve for x
    x = 45,961,825.69/7,813.28
  6. Step 6: Final answer
    x = 5,882.53

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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.