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Finding the Fourth Proportional to 7,080.27, 10,620.35 and 1,815.27

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Solution

The fourth proportional to 7,080.27, 10,620.35 and 1,815.27 is: 2,722.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,080.27 : 10,620.35 = 1,815.27 : x
  2. Step 2: Convert to fraction form
    7,080.27/10,620.35 = 1,815.27/x
  3. Step 3: Cross multiply
    7,080.27x = 10,620.35 × 1,815.27
  4. Step 4: Simplify right side
    7,080.27x = 19,278,760.65
  5. Step 5: Solve for x
    x = 19,278,760.65/7,080.27
  6. Step 6: Final answer
    x = 2,722.89

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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.