Home / 7,921.86-11,882.75-1,998.76

Finding the Fourth Proportional to 7,921.86, 11,882.75 and 1,998.76

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Solution

The fourth proportional to 7,921.86, 11,882.75 and 1,998.76 is: 2,998.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.86 : 11,882.75 = 1,998.76 : x
  2. Step 2: Convert to fraction form
    7,921.86/11,882.75 = 1,998.76/x
  3. Step 3: Cross multiply
    7,921.86x = 11,882.75 × 1,998.76
  4. Step 4: Simplify right side
    7,921.86x = 23,750,705.98
  5. Step 5: Solve for x
    x = 23,750,705.98/7,921.86
  6. Step 6: Final answer
    x = 2,998.12

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1.5x scale

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.