Home / 7,922.12-11,880.78-4,171.86

Finding the Fourth Proportional to 7,922.12, 11,880.78 and 4,171.86

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Solution

The fourth proportional to 7,922.12, 11,880.78 and 4,171.86 is: 6,256.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.12 : 11,880.78 = 4,171.86 : x
  2. Step 2: Convert to fraction form
    7,922.12/11,880.78 = 4,171.86/x
  3. Step 3: Cross multiply
    7,922.12x = 11,880.78 × 4,171.86
  4. Step 4: Simplify right side
    7,922.12x = 49,564,950.85
  5. Step 5: Solve for x
    x = 49,564,950.85/7,922.12
  6. Step 6: Final answer
    x = 6,256.53

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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.