Home / 2,815.24-3,883.80-2,185.96

Finding the Fourth Proportional to 2,815.24, 3,883.80 and 2,185.96

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Solution

The fourth proportional to 2,815.24, 3,883.80 and 2,185.96 is: 3,015.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.24 : 3,883.80 = 2,185.96 : x
  2. Step 2: Convert to fraction form
    2,815.24/3,883.80 = 2,185.96/x
  3. Step 3: Cross multiply
    2,815.24x = 3,883.80 × 2,185.96
  4. Step 4: Simplify right side
    2,815.24x = 8,489,831.45
  5. Step 5: Solve for x
    x = 8,489,831.45/2,815.24
  6. Step 6: Final answer
    x = 3,015.67

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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.