Home / 7,147.62-9,861.30-4,162.80

Finding the Fourth Proportional to 7,147.62, 9,861.30 and 4,162.80

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Solution

The fourth proportional to 7,147.62, 9,861.30 and 4,162.80 is: 5,743.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.62 : 9,861.30 = 4,162.80 : x
  2. Step 2: Convert to fraction form
    7,147.62/9,861.30 = 4,162.80/x
  3. Step 3: Cross multiply
    7,147.62x = 9,861.30 × 4,162.80
  4. Step 4: Simplify right side
    7,147.62x = 41,050,619.64
  5. Step 5: Solve for x
    x = 41,050,619.64/7,147.62
  6. Step 6: Final answer
    x = 5,743.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.