Home / 7,981.92-11,972.40-2,983.32

Finding the Fourth Proportional to 7,981.92, 11,972.40 and 2,983.32

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Solution

The fourth proportional to 7,981.92, 11,972.40 and 2,983.32 is: 4,474.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.92 : 11,972.40 = 2,983.32 : x
  2. Step 2: Convert to fraction form
    7,981.92/11,972.40 = 2,983.32/x
  3. Step 3: Cross multiply
    7,981.92x = 11,972.40 × 2,983.32
  4. Step 4: Simplify right side
    7,981.92x = 35,717,500.37
  5. Step 5: Solve for x
    x = 35,717,500.37/7,981.92
  6. Step 6: Final answer
    x = 4,474.80

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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.