Home / 7,640.12-11,458.74-2,709.56

Finding the Fourth Proportional to 7,640.12, 11,458.74 and 2,709.56

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Solution

The fourth proportional to 7,640.12, 11,458.74 and 2,709.56 is: 4,063.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,640.12 : 11,458.74 = 2,709.56 : x
  2. Step 2: Convert to fraction form
    7,640.12/11,458.74 = 2,709.56/x
  3. Step 3: Cross multiply
    7,640.12x = 11,458.74 × 2,709.56
  4. Step 4: Simplify right side
    7,640.12x = 31,048,143.55
  5. Step 5: Solve for x
    x = 31,048,143.55/7,640.12
  6. Step 6: Final answer
    x = 4,063.83

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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.