Home / 7,451.46-11,178-3,289.68

Finding the Fourth Proportional to 7,451.46, 11,178 and 3,289.68

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Solution

The fourth proportional to 7,451.46, 11,178 and 3,289.68 is: 4,934.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,451.46 : 11,178 = 3,289.68 : x
  2. Step 2: Convert to fraction form
    7,451.46/11,178 = 3,289.68/x
  3. Step 3: Cross multiply
    7,451.46x = 11,178 × 3,289.68
  4. Step 4: Simplify right side
    7,451.46x = 36,772,043.04
  5. Step 5: Solve for x
    x = 36,772,043.04/7,451.46
  6. Step 6: Final answer
    x = 4,934.88

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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.