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Finding the Fourth Proportional to 8,180.80, 12,246.90 and 4,892.20

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Solution

The fourth proportional to 8,180.80, 12,246.90 and 4,892.20 is: 7,323.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,180.80 : 12,246.90 = 4,892.20 : x
  2. Step 2: Convert to fraction form
    8,180.80/12,246.90 = 4,892.20/x
  3. Step 3: Cross multiply
    8,180.80x = 12,246.90 × 4,892.20
  4. Step 4: Simplify right side
    8,180.80x = 59,914,284.18
  5. Step 5: Solve for x
    x = 59,914,284.18/8,180.80
  6. Step 6: Final answer
    x = 7,323.77

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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.