Home / 2,763.90-3,815.28-1,768.95

Finding the Fourth Proportional to 2,763.90, 3,815.28 and 1,768.95

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Solution

The fourth proportional to 2,763.90, 3,815.28 and 1,768.95 is: 2,441.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,763.90 : 3,815.28 = 1,768.95 : x
  2. Step 2: Convert to fraction form
    2,763.90/3,815.28 = 1,768.95/x
  3. Step 3: Cross multiply
    2,763.90x = 3,815.28 × 1,768.95
  4. Step 4: Simplify right side
    2,763.90x = 6,749,039.56
  5. Step 5: Solve for x
    x = 6,749,039.56/2,763.90
  6. Step 6: Final answer
    x = 2,441.85

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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.