Home / 8,786.40-13,179.60-3,591.06

Finding the Fourth Proportional to 8,786.40, 13,179.60 and 3,591.06

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Solution

The fourth proportional to 8,786.40, 13,179.60 and 3,591.06 is: 5,386.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.40 : 13,179.60 = 3,591.06 : x
  2. Step 2: Convert to fraction form
    8,786.40/13,179.60 = 3,591.06/x
  3. Step 3: Cross multiply
    8,786.40x = 13,179.60 × 3,591.06
  4. Step 4: Simplify right side
    8,786.40x = 47,328,734.38
  5. Step 5: Solve for x
    x = 47,328,734.38/8,786.40
  6. Step 6: Final answer
    x = 5,386.59

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.