Home / 1,815.20-2,722.80-1,608.65

Finding the Fourth Proportional to 1,815.20, 2,722.80 and 1,608.65

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Solution

The fourth proportional to 1,815.20, 2,722.80 and 1,608.65 is: 2,412.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.20 : 2,722.80 = 1,608.65 : x
  2. Step 2: Convert to fraction form
    1,815.20/2,722.80 = 1,608.65/x
  3. Step 3: Cross multiply
    1,815.20x = 2,722.80 × 1,608.65
  4. Step 4: Simplify right side
    1,815.20x = 4,380,032.22
  5. Step 5: Solve for x
    x = 4,380,032.22/1,815.20
  6. Step 6: Final answer
    x = 2,412.98

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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.