Home / 8,388.42-11,581.44-5,205.12

Finding the Fourth Proportional to 8,388.42, 11,581.44 and 5,205.12

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Solution

The fourth proportional to 8,388.42, 11,581.44 and 5,205.12 is: 7,186.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,388.42 : 11,581.44 = 5,205.12 : x
  2. Step 2: Convert to fraction form
    8,388.42/11,581.44 = 5,205.12/x
  3. Step 3: Cross multiply
    8,388.42x = 11,581.44 × 5,205.12
  4. Step 4: Simplify right side
    8,388.42x = 60,282,784.97
  5. Step 5: Solve for x
    x = 60,282,784.97/8,388.42
  6. Step 6: Final answer
    x = 7,186.43

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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.