Home / 8,778.80-13,168.20-7,466.60

Finding the Fourth Proportional to 8,778.80, 13,168.20 and 7,466.60

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Solution

The fourth proportional to 8,778.80, 13,168.20 and 7,466.60 is: 11,199.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.80 : 13,168.20 = 7,466.60 : x
  2. Step 2: Convert to fraction form
    8,778.80/13,168.20 = 7,466.60/x
  3. Step 3: Cross multiply
    8,778.80x = 13,168.20 × 7,466.60
  4. Step 4: Simplify right side
    8,778.80x = 98,321,682.12
  5. Step 5: Solve for x
    x = 98,321,682.12/8,778.80
  6. Step 6: Final answer
    x = 11,199.90

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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.