Home / 5,315.27-7,965.94-2,191.64

Finding the Fourth Proportional to 5,315.27, 7,965.94 and 2,191.64

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Solution

The fourth proportional to 5,315.27, 7,965.94 and 2,191.64 is: 3,284.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.27 : 7,965.94 = 2,191.64 : x
  2. Step 2: Convert to fraction form
    5,315.27/7,965.94 = 2,191.64/x
  3. Step 3: Cross multiply
    5,315.27x = 7,965.94 × 2,191.64
  4. Step 4: Simplify right side
    5,315.27x = 17,458,431.54
  5. Step 5: Solve for x
    x = 17,458,431.54/5,315.27
  6. Step 6: Final answer
    x = 3,284.58

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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.