Home / 5,419.78-8,128.06-2,299.75

Finding the Fourth Proportional to 5,419.78, 8,128.06 and 2,299.75

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Solution

The fourth proportional to 5,419.78, 8,128.06 and 2,299.75 is: 3,448.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.78 : 8,128.06 = 2,299.75 : x
  2. Step 2: Convert to fraction form
    5,419.78/8,128.06 = 2,299.75/x
  3. Step 3: Cross multiply
    5,419.78x = 8,128.06 × 2,299.75
  4. Step 4: Simplify right side
    5,419.78x = 18,692,505.99
  5. Step 5: Solve for x
    x = 18,692,505.99/5,419.78
  6. Step 6: Final answer
    x = 3,448.94

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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.