Home / 7,960.96-11,945.40-3,580

Finding the Fourth Proportional to 7,960.96, 11,945.40 and 3,580

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Solution

The fourth proportional to 7,960.96, 11,945.40 and 3,580 is: 5,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,960.96 : 11,945.40 = 3,580 : x
  2. Step 2: Convert to fraction form
    7,960.96/11,945.40 = 3,580/x
  3. Step 3: Cross multiply
    7,960.96x = 11,945.40 × 3,580
  4. Step 4: Simplify right side
    7,960.96x = 42,764,532
  5. Step 5: Solve for x
    x = 42,764,532/7,960.96
  6. Step 6: Final answer
    x = 5,371.78

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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.