Home / 7,942.20-11,918.78-3,564.56

Finding the Fourth Proportional to 7,942.20, 11,918.78 and 3,564.56

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Solution

The fourth proportional to 7,942.20, 11,918.78 and 3,564.56 is: 5,349.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,942.20 : 11,918.78 = 3,564.56 : x
  2. Step 2: Convert to fraction form
    7,942.20/11,918.78 = 3,564.56/x
  3. Step 3: Cross multiply
    7,942.20x = 11,918.78 × 3,564.56
  4. Step 4: Simplify right side
    7,942.20x = 42,485,129.02
  5. Step 5: Solve for x
    x = 42,485,129.02/7,942.20
  6. Step 6: Final answer
    x = 5,349.29

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1.5x scale

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.