Home / 2,815.16-4,223.11-2,659.71

Finding the Fourth Proportional to 2,815.16, 4,223.11 and 2,659.71

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Solution

The fourth proportional to 2,815.16, 4,223.11 and 2,659.71 is: 3,989.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.16 : 4,223.11 = 2,659.71 : x
  2. Step 2: Convert to fraction form
    2,815.16/4,223.11 = 2,659.71/x
  3. Step 3: Cross multiply
    2,815.16x = 4,223.11 × 2,659.71
  4. Step 4: Simplify right side
    2,815.16x = 11,232,257.68
  5. Step 5: Solve for x
    x = 11,232,257.68/2,815.16
  6. Step 6: Final answer
    x = 3,989.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.