Home / 7,921.62-11,849.60-7,199.91

Finding the Fourth Proportional to 7,921.62, 11,849.60 and 7,199.91

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Solution

The fourth proportional to 7,921.62, 11,849.60 and 7,199.91 is: 10,770.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.62 : 11,849.60 = 7,199.91 : x
  2. Step 2: Convert to fraction form
    7,921.62/11,849.60 = 7,199.91/x
  3. Step 3: Cross multiply
    7,921.62x = 11,849.60 × 7,199.91
  4. Step 4: Simplify right side
    7,921.62x = 85,316,053.54
  5. Step 5: Solve for x
    x = 85,316,053.54/7,921.62
  6. Step 6: Final answer
    x = 10,770.03

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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.