Home / 1,867.20-2,789.04-1,815.36

Finding the Fourth Proportional to 1,867.20, 2,789.04 and 1,815.36

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Solution

The fourth proportional to 1,867.20, 2,789.04 and 1,815.36 is: 2,711.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.20 : 2,789.04 = 1,815.36 : x
  2. Step 2: Convert to fraction form
    1,867.20/2,789.04 = 1,815.36/x
  3. Step 3: Cross multiply
    1,867.20x = 2,789.04 × 1,815.36
  4. Step 4: Simplify right side
    1,867.20x = 5,063,111.65
  5. Step 5: Solve for x
    x = 5,063,111.65/1,867.20
  6. Step 6: Final answer
    x = 2,711.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.