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Finding the Fourth Proportional to 7,194.32, 9,928.92 and 4,211.12

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Solution

The fourth proportional to 7,194.32, 9,928.92 and 4,211.12 is: 5,811.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,194.32 : 9,928.92 = 4,211.12 : x
  2. Step 2: Convert to fraction form
    7,194.32/9,928.92 = 4,211.12/x
  3. Step 3: Cross multiply
    7,194.32x = 9,928.92 × 4,211.12
  4. Step 4: Simplify right side
    7,194.32x = 41,811,873.59
  5. Step 5: Solve for x
    x = 41,811,873.59/7,194.32
  6. Step 6: Final answer
    x = 5,811.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.