Home / 2,742.87-4,107.33-1,815.65

Finding the Fourth Proportional to 2,742.87, 4,107.33 and 1,815.65

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Solution

The fourth proportional to 2,742.87, 4,107.33 and 1,815.65 is: 2,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.87 : 4,107.33 = 1,815.65 : x
  2. Step 2: Convert to fraction form
    2,742.87/4,107.33 = 1,815.65/x
  3. Step 3: Cross multiply
    2,742.87x = 4,107.33 × 1,815.65
  4. Step 4: Simplify right side
    2,742.87x = 7,457,453.18
  5. Step 5: Solve for x
    x = 7,457,453.18/2,742.87
  6. Step 6: Final answer
    x = 2,718.85

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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.