Home / 7,277.76-10,917.12-6,121.92

Finding the Fourth Proportional to 7,277.76, 10,917.12 and 6,121.92

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Solution

The fourth proportional to 7,277.76, 10,917.12 and 6,121.92 is: 9,183.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,277.76 : 10,917.12 = 6,121.92 : x
  2. Step 2: Convert to fraction form
    7,277.76/10,917.12 = 6,121.92/x
  3. Step 3: Cross multiply
    7,277.76x = 10,917.12 × 6,121.92
  4. Step 4: Simplify right side
    7,277.76x = 66,833,735.27
  5. Step 5: Solve for x
    x = 66,833,735.27/7,277.76
  6. Step 6: Final answer
    x = 9,183.28

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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.