Home / 8,891.28-13,338.44-3,960.81

Finding the Fourth Proportional to 8,891.28, 13,338.44 and 3,960.81

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Solution

The fourth proportional to 8,891.28, 13,338.44 and 3,960.81 is: 5,941.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.28 : 13,338.44 = 3,960.81 : x
  2. Step 2: Convert to fraction form
    8,891.28/13,338.44 = 3,960.81/x
  3. Step 3: Cross multiply
    8,891.28x = 13,338.44 × 3,960.81
  4. Step 4: Simplify right side
    8,891.28x = 52,831,021.59
  5. Step 5: Solve for x
    x = 52,831,021.59/8,891.28
  6. Step 6: Final answer
    x = 5,941.89

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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.