Home / 9,109.45-12,628.36-8,610.54

Finding the Fourth Proportional to 9,109.45, 12,628.36 and 8,610.54

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Solution

The fourth proportional to 9,109.45, 12,628.36 and 8,610.54 is: 11,936.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,109.45 : 12,628.36 = 8,610.54 : x
  2. Step 2: Convert to fraction form
    9,109.45/12,628.36 = 8,610.54/x
  3. Step 3: Cross multiply
    9,109.45x = 12,628.36 × 8,610.54
  4. Step 4: Simplify right side
    9,109.45x = 108,736,998.91
  5. Step 5: Solve for x
    x = 108,736,998.91/9,109.45
  6. Step 6: Final answer
    x = 11,936.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.