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Finding the Fourth Proportional to 11,387.80, 17,080.14 and 3,068.20

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Solution

The fourth proportional to 11,387.80, 17,080.14 and 3,068.20 is: 4,601.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.80 : 17,080.14 = 3,068.20 : x
  2. Step 2: Convert to fraction form
    11,387.80/17,080.14 = 3,068.20/x
  3. Step 3: Cross multiply
    11,387.80x = 17,080.14 × 3,068.20
  4. Step 4: Simplify right side
    11,387.80x = 52,405,285.55
  5. Step 5: Solve for x
    x = 52,405,285.55/11,387.80
  6. Step 6: Final answer
    x = 4,601.88

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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.