Home / 8,200.49-11,318.36-5,215.75

Finding the Fourth Proportional to 8,200.49, 11,318.36 and 5,215.75

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Solution

The fourth proportional to 8,200.49, 11,318.36 and 5,215.75 is: 7,198.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,200.49 : 11,318.36 = 5,215.75 : x
  2. Step 2: Convert to fraction form
    8,200.49/11,318.36 = 5,215.75/x
  3. Step 3: Cross multiply
    8,200.49x = 11,318.36 × 5,215.75
  4. Step 4: Simplify right side
    8,200.49x = 59,033,736.17
  5. Step 5: Solve for x
    x = 59,033,736.17/8,200.49
  6. Step 6: Final answer
    x = 7,198.81

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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.