Home / 7,989.34-11,983.32-3,308.14

Finding the Fourth Proportional to 7,989.34, 11,983.32 and 3,308.14

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Solution

The fourth proportional to 7,989.34, 11,983.32 and 3,308.14 is: 4,961.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.34 : 11,983.32 = 3,308.14 : x
  2. Step 2: Convert to fraction form
    7,989.34/11,983.32 = 3,308.14/x
  3. Step 3: Cross multiply
    7,989.34x = 11,983.32 × 3,308.14
  4. Step 4: Simplify right side
    7,989.34x = 39,642,500.22
  5. Step 5: Solve for x
    x = 39,642,500.22/7,989.34
  6. Step 6: Final answer
    x = 4,961.92

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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.