Home / 2,815.29-3,883.84-1,635.73

Finding the Fourth Proportional to 2,815.29, 3,883.84 and 1,635.73

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Solution

The fourth proportional to 2,815.29, 3,883.84 and 1,635.73 is: 2,256.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.29 : 3,883.84 = 1,635.73 : x
  2. Step 2: Convert to fraction form
    2,815.29/3,883.84 = 1,635.73/x
  3. Step 3: Cross multiply
    2,815.29x = 3,883.84 × 1,635.73
  4. Step 4: Simplify right side
    2,815.29x = 6,352,899.80
  5. Step 5: Solve for x
    x = 6,352,899.80/2,815.29
  6. Step 6: Final answer
    x = 2,256.57

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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.