Home / 7,943.28-11,916-2,749.56

Finding the Fourth Proportional to 7,943.28, 11,916 and 2,749.56

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Solution

The fourth proportional to 7,943.28, 11,916 and 2,749.56 is: 4,124.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.28 : 11,916 = 2,749.56 : x
  2. Step 2: Convert to fraction form
    7,943.28/11,916 = 2,749.56/x
  3. Step 3: Cross multiply
    7,943.28x = 11,916 × 2,749.56
  4. Step 4: Simplify right side
    7,943.28x = 32,763,756.96
  5. Step 5: Solve for x
    x = 32,763,756.96/7,943.28
  6. Step 6: Final answer
    x = 4,124.71

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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.