Home / 8,186.12-11,293.88-5,355.11

Finding the Fourth Proportional to 8,186.12, 11,293.88 and 5,355.11

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Solution

The fourth proportional to 8,186.12, 11,293.88 and 5,355.11 is: 7,388.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,186.12 : 11,293.88 = 5,355.11 : x
  2. Step 2: Convert to fraction form
    8,186.12/11,293.88 = 5,355.11/x
  3. Step 3: Cross multiply
    8,186.12x = 11,293.88 × 5,355.11
  4. Step 4: Simplify right side
    8,186.12x = 60,479,969.73
  5. Step 5: Solve for x
    x = 60,479,969.73/8,186.12
  6. Step 6: Final answer
    x = 7,388.11

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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.