Home / 7,816.78-11,723.85-2,551.90

Finding the Fourth Proportional to 7,816.78, 11,723.85 and 2,551.90

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Solution

The fourth proportional to 7,816.78, 11,723.85 and 2,551.90 is: 3,827.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.78 : 11,723.85 = 2,551.90 : x
  2. Step 2: Convert to fraction form
    7,816.78/11,723.85 = 2,551.90/x
  3. Step 3: Cross multiply
    7,816.78x = 11,723.85 × 2,551.90
  4. Step 4: Simplify right side
    7,816.78x = 29,918,092.82
  5. Step 5: Solve for x
    x = 29,918,092.82/7,816.78
  6. Step 6: Final answer
    x = 3,827.42

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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.