Home / 7,531.92-11,289.78-3,147.12

Finding the Fourth Proportional to 7,531.92, 11,289.78 and 3,147.12

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Solution

The fourth proportional to 7,531.92, 11,289.78 and 3,147.12 is: 4,717.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,531.92 : 11,289.78 = 3,147.12 : x
  2. Step 2: Convert to fraction form
    7,531.92/11,289.78 = 3,147.12/x
  3. Step 3: Cross multiply
    7,531.92x = 11,289.78 × 3,147.12
  4. Step 4: Simplify right side
    7,531.92x = 35,530,292.43
  5. Step 5: Solve for x
    x = 35,530,292.43/7,531.92
  6. Step 6: Final answer
    x = 4,717.30

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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.