Home / 9,129.78-13,693.60-2,556.48

Finding the Fourth Proportional to 9,129.78, 13,693.60 and 2,556.48

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Solution

The fourth proportional to 9,129.78, 13,693.60 and 2,556.48 is: 3,834.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.78 : 13,693.60 = 2,556.48 : x
  2. Step 2: Convert to fraction form
    9,129.78/13,693.60 = 2,556.48/x
  3. Step 3: Cross multiply
    9,129.78x = 13,693.60 × 2,556.48
  4. Step 4: Simplify right side
    9,129.78x = 35,007,414.53
  5. Step 5: Solve for x
    x = 35,007,414.53/9,129.78
  6. Step 6: Final answer
    x = 3,834.42

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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.