Home / 5,212.88-7,815.48-2,613.84

Finding the Fourth Proportional to 5,212.88, 7,815.48 and 2,613.84

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Solution

The fourth proportional to 5,212.88, 7,815.48 and 2,613.84 is: 3,918.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212.88 : 7,815.48 = 2,613.84 : x
  2. Step 2: Convert to fraction form
    5,212.88/7,815.48 = 2,613.84/x
  3. Step 3: Cross multiply
    5,212.88x = 7,815.48 × 2,613.84
  4. Step 4: Simplify right side
    5,212.88x = 20,428,414.24
  5. Step 5: Solve for x
    x = 20,428,414.24/5,212.88
  6. Step 6: Final answer
    x = 3,918.83

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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.