Home / 7,475.78-11,213.62-1,928.66

Finding the Fourth Proportional to 7,475.78, 11,213.62 and 1,928.66

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Solution

The fourth proportional to 7,475.78, 11,213.62 and 1,928.66 is: 2,892.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,475.78 : 11,213.62 = 1,928.66 : x
  2. Step 2: Convert to fraction form
    7,475.78/11,213.62 = 1,928.66/x
  3. Step 3: Cross multiply
    7,475.78x = 11,213.62 × 1,928.66
  4. Step 4: Simplify right side
    7,475.78x = 21,627,199.46
  5. Step 5: Solve for x
    x = 21,627,199.46/7,475.78
  6. Step 6: Final answer
    x = 2,892.97

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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.