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Finding the Fourth Proportional to 8,080.10, 12,115.19 and 3,143.99

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Solution

The fourth proportional to 8,080.10, 12,115.19 and 3,143.99 is: 4,714.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.10 : 12,115.19 = 3,143.99 : x
  2. Step 2: Convert to fraction form
    8,080.10/12,115.19 = 3,143.99/x
  3. Step 3: Cross multiply
    8,080.10x = 12,115.19 × 3,143.99
  4. Step 4: Simplify right side
    8,080.10x = 38,090,020.49
  5. Step 5: Solve for x
    x = 38,090,020.49/8,080.10
  6. Step 6: Final answer
    x = 4,714.05

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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.