Home / 7,631.20-11,441.92-3,246.40

Finding the Fourth Proportional to 7,631.20, 11,441.92 and 3,246.40

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Solution

The fourth proportional to 7,631.20, 11,441.92 and 3,246.40 is: 4,867.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,631.20 : 11,441.92 = 3,246.40 : x
  2. Step 2: Convert to fraction form
    7,631.20/11,441.92 = 3,246.40/x
  3. Step 3: Cross multiply
    7,631.20x = 11,441.92 × 3,246.40
  4. Step 4: Simplify right side
    7,631.20x = 37,145,049.09
  5. Step 5: Solve for x
    x = 37,145,049.09/7,631.20
  6. Step 6: Final answer
    x = 4,867.52

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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.