Home / 7,921.84-11,889.54-4,415.38

Finding the Fourth Proportional to 7,921.84, 11,889.54 and 4,415.38

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Solution

The fourth proportional to 7,921.84, 11,889.54 and 4,415.38 is: 6,626.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.84 : 11,889.54 = 4,415.38 : x
  2. Step 2: Convert to fraction form
    7,921.84/11,889.54 = 4,415.38/x
  3. Step 3: Cross multiply
    7,921.84x = 11,889.54 × 4,415.38
  4. Step 4: Simplify right side
    7,921.84x = 52,496,837.13
  5. Step 5: Solve for x
    x = 52,496,837.13/7,921.84
  6. Step 6: Final answer
    x = 6,626.85

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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.