Home / 7,942.20-11,918.16-3,264.45

Finding the Fourth Proportional to 7,942.20, 11,918.16 and 3,264.45

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Solution

The fourth proportional to 7,942.20, 11,918.16 and 3,264.45 is: 4,898.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,942.20 : 11,918.16 = 3,264.45 : x
  2. Step 2: Convert to fraction form
    7,942.20/11,918.16 = 3,264.45/x
  3. Step 3: Cross multiply
    7,942.20x = 11,918.16 × 3,264.45
  4. Step 4: Simplify right side
    7,942.20x = 38,906,237.41
  5. Step 5: Solve for x
    x = 38,906,237.41/7,942.20
  6. Step 6: Final answer
    x = 4,898.67

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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.