Home / 8,179.20-12,268.80-4,492.80

Finding the Fourth Proportional to 8,179.20, 12,268.80 and 4,492.80

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Solution

The fourth proportional to 8,179.20, 12,268.80 and 4,492.80 is: 6,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,179.20 : 12,268.80 = 4,492.80 : x
  2. Step 2: Convert to fraction form
    8,179.20/12,268.80 = 4,492.80/x
  3. Step 3: Cross multiply
    8,179.20x = 12,268.80 × 4,492.80
  4. Step 4: Simplify right side
    8,179.20x = 55,121,264.64
  5. Step 5: Solve for x
    x = 55,121,264.64/8,179.20
  6. Step 6: Final answer
    x = 6,739.20

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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.