Home / 7,128.60-10,695.92-3,837.85

Finding the Fourth Proportional to 7,128.60, 10,695.92 and 3,837.85

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Solution

The fourth proportional to 7,128.60, 10,695.92 and 3,837.85 is: 5,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.60 : 10,695.92 = 3,837.85 : x
  2. Step 2: Convert to fraction form
    7,128.60/10,695.92 = 3,837.85/x
  3. Step 3: Cross multiply
    7,128.60x = 10,695.92 × 3,837.85
  4. Step 4: Simplify right side
    7,128.60x = 41,049,336.57
  5. Step 5: Solve for x
    x = 41,049,336.57/7,128.60
  6. Step 6: Final answer
    x = 5,758.40

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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.