Home / 2,815.22-3,886.08-2,519.96

Finding the Fourth Proportional to 2,815.22, 3,886.08 and 2,519.96

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Solution

The fourth proportional to 2,815.22, 3,886.08 and 2,519.96 is: 3,478.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.22 : 3,886.08 = 2,519.96 : x
  2. Step 2: Convert to fraction form
    2,815.22/3,886.08 = 2,519.96/x
  3. Step 3: Cross multiply
    2,815.22x = 3,886.08 × 2,519.96
  4. Step 4: Simplify right side
    2,815.22x = 9,792,766.16
  5. Step 5: Solve for x
    x = 9,792,766.16/2,815.22
  6. Step 6: Final answer
    x = 3,478.51

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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.