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Finding the Fourth Proportional to 9,452.80, 14,179.20 and 8,140.60

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Solution

The fourth proportional to 9,452.80, 14,179.20 and 8,140.60 is: 12,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,452.80 : 14,179.20 = 8,140.60 : x
  2. Step 2: Convert to fraction form
    9,452.80/14,179.20 = 8,140.60/x
  3. Step 3: Cross multiply
    9,452.80x = 14,179.20 × 8,140.60
  4. Step 4: Simplify right side
    9,452.80x = 115,427,195.52
  5. Step 5: Solve for x
    x = 115,427,195.52/9,452.80
  6. Step 6: Final answer
    x = 12,210.90

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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.