Home / 7,660.78-11,481.36-6,669.54

Finding the Fourth Proportional to 7,660.78, 11,481.36 and 6,669.54

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Solution

The fourth proportional to 7,660.78, 11,481.36 and 6,669.54 is: 9,995.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,660.78 : 11,481.36 = 6,669.54 : x
  2. Step 2: Convert to fraction form
    7,660.78/11,481.36 = 6,669.54/x
  3. Step 3: Cross multiply
    7,660.78x = 11,481.36 × 6,669.54
  4. Step 4: Simplify right side
    7,660.78x = 76,575,389.77
  5. Step 5: Solve for x
    x = 76,575,389.77/7,660.78
  6. Step 6: Final answer
    x = 9,995.77

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1.5x scale

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.