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Finding the Fourth Proportional to 8,956.84, 13,395.96 and 7,976.56

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Solution

The fourth proportional to 8,956.84, 13,395.96 and 7,976.56 is: 11,929.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,956.84 : 13,395.96 = 7,976.56 : x
  2. Step 2: Convert to fraction form
    8,956.84/13,395.96 = 7,976.56/x
  3. Step 3: Cross multiply
    8,956.84x = 13,395.96 × 7,976.56
  4. Step 4: Simplify right side
    8,956.84x = 106,853,678.70
  5. Step 5: Solve for x
    x = 106,853,678.70/8,956.84
  6. Step 6: Final answer
    x = 11,929.84

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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.