Home / 7,438.24-11,145.50-3,928.12

Finding the Fourth Proportional to 7,438.24, 11,145.50 and 3,928.12

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Solution

The fourth proportional to 7,438.24, 11,145.50 and 3,928.12 is: 5,885.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.24 : 11,145.50 = 3,928.12 : x
  2. Step 2: Convert to fraction form
    7,438.24/11,145.50 = 3,928.12/x
  3. Step 3: Cross multiply
    7,438.24x = 11,145.50 × 3,928.12
  4. Step 4: Simplify right side
    7,438.24x = 43,780,861.46
  5. Step 5: Solve for x
    x = 43,780,861.46/7,438.24
  6. Step 6: Final answer
    x = 5,885.92

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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.