Home / 7,168.26-9,891.36-3,981.18

Finding the Fourth Proportional to 7,168.26, 9,891.36 and 3,981.18

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Solution

The fourth proportional to 7,168.26, 9,891.36 and 3,981.18 is: 5,493.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168.26 : 9,891.36 = 3,981.18 : x
  2. Step 2: Convert to fraction form
    7,168.26/9,891.36 = 3,981.18/x
  3. Step 3: Cross multiply
    7,168.26x = 9,891.36 × 3,981.18
  4. Step 4: Simplify right side
    7,168.26x = 39,379,284.60
  5. Step 5: Solve for x
    x = 39,379,284.60/7,168.26
  6. Step 6: Final answer
    x = 5,493.56

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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.