Home / 2,212.60-3,319.16-1,917.76

Finding the Fourth Proportional to 2,212.60, 3,319.16 and 1,917.76

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Solution

The fourth proportional to 2,212.60, 3,319.16 and 1,917.76 is: 2,876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.60 : 3,319.16 = 1,917.76 : x
  2. Step 2: Convert to fraction form
    2,212.60/3,319.16 = 1,917.76/x
  3. Step 3: Cross multiply
    2,212.60x = 3,319.16 × 1,917.76
  4. Step 4: Simplify right side
    2,212.60x = 6,365,352.28
  5. Step 5: Solve for x
    x = 6,365,352.28/2,212.60
  6. Step 6: Final answer
    x = 2,876.87

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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.