Home / 7,872.44-11,808.64-5,399.76

Finding the Fourth Proportional to 7,872.44, 11,808.64 and 5,399.76

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Solution

The fourth proportional to 7,872.44, 11,808.64 and 5,399.76 is: 8,099.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.44 : 11,808.64 = 5,399.76 : x
  2. Step 2: Convert to fraction form
    7,872.44/11,808.64 = 5,399.76/x
  3. Step 3: Cross multiply
    7,872.44x = 11,808.64 × 5,399.76
  4. Step 4: Simplify right side
    7,872.44x = 63,763,821.93
  5. Step 5: Solve for x
    x = 63,763,821.93/7,872.44
  6. Step 6: Final answer
    x = 8,099.63

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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.