Home / 8,214.23-11,331.68-5,380.38

Finding the Fourth Proportional to 8,214.23, 11,331.68 and 5,380.38

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Solution

The fourth proportional to 8,214.23, 11,331.68 and 5,380.38 is: 7,422.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,214.23 : 11,331.68 = 5,380.38 : x
  2. Step 2: Convert to fraction form
    8,214.23/11,331.68 = 5,380.38/x
  3. Step 3: Cross multiply
    8,214.23x = 11,331.68 × 5,380.38
  4. Step 4: Simplify right side
    8,214.23x = 60,968,701.23
  5. Step 5: Solve for x
    x = 60,968,701.23/8,214.23
  6. Step 6: Final answer
    x = 7,422.33

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Half scale
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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.