Home / 2,764.80-3,815.83-1,645.84

Finding the Fourth Proportional to 2,764.80, 3,815.83 and 1,645.84

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Solution

The fourth proportional to 2,764.80, 3,815.83 and 1,645.84 is: 2,271.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,764.80 : 3,815.83 = 1,645.84 : x
  2. Step 2: Convert to fraction form
    2,764.80/3,815.83 = 1,645.84/x
  3. Step 3: Cross multiply
    2,764.80x = 3,815.83 × 1,645.84
  4. Step 4: Simplify right side
    2,764.80x = 6,280,245.65
  5. Step 5: Solve for x
    x = 6,280,245.65/2,764.80
  6. Step 6: Final answer
    x = 2,271.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.