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Finding the Fourth Proportional to 8,172.66, 12,260.61 and 2,982.18

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Solution

The fourth proportional to 8,172.66, 12,260.61 and 2,982.18 is: 4,473.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.66 : 12,260.61 = 2,982.18 : x
  2. Step 2: Convert to fraction form
    8,172.66/12,260.61 = 2,982.18/x
  3. Step 3: Cross multiply
    8,172.66x = 12,260.61 × 2,982.18
  4. Step 4: Simplify right side
    8,172.66x = 36,563,345.93
  5. Step 5: Solve for x
    x = 36,563,345.93/8,172.66
  6. Step 6: Final answer
    x = 4,473.86

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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.