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Finding the Fourth Proportional to 8,158.80, 12,230.10 and 3,768.60

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Solution

The fourth proportional to 8,158.80, 12,230.10 and 3,768.60 is: 5,649.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,158.80 : 12,230.10 = 3,768.60 : x
  2. Step 2: Convert to fraction form
    8,158.80/12,230.10 = 3,768.60/x
  3. Step 3: Cross multiply
    8,158.80x = 12,230.10 × 3,768.60
  4. Step 4: Simplify right side
    8,158.80x = 46,090,354.86
  5. Step 5: Solve for x
    x = 46,090,354.86/8,158.80
  6. Step 6: Final answer
    x = 5,649.16

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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.