Home / 7,676.28-11,516.76-3,981.15

Finding the Fourth Proportional to 7,676.28, 11,516.76 and 3,981.15

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Solution

The fourth proportional to 7,676.28, 11,516.76 and 3,981.15 is: 5,972.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,676.28 : 11,516.76 = 3,981.15 : x
  2. Step 2: Convert to fraction form
    7,676.28/11,516.76 = 3,981.15/x
  3. Step 3: Cross multiply
    7,676.28x = 11,516.76 × 3,981.15
  4. Step 4: Simplify right side
    7,676.28x = 45,849,949.07
  5. Step 5: Solve for x
    x = 45,849,949.07/7,676.28
  6. Step 6: Final answer
    x = 5,972.94

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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.