Home / 2,913.54-4,367.21-2,120.96

Finding the Fourth Proportional to 2,913.54, 4,367.21 and 2,120.96

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Solution

The fourth proportional to 2,913.54, 4,367.21 and 2,120.96 is: 3,179.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.54 : 4,367.21 = 2,120.96 : x
  2. Step 2: Convert to fraction form
    2,913.54/4,367.21 = 2,120.96/x
  3. Step 3: Cross multiply
    2,913.54x = 4,367.21 × 2,120.96
  4. Step 4: Simplify right side
    2,913.54x = 9,262,645.28
  5. Step 5: Solve for x
    x = 9,262,645.28/2,913.54
  6. Step 6: Final answer
    x = 3,179.17

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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.