Home / 2,161.60-3,236.64-1,294.72

Finding the Fourth Proportional to 2,161.60, 3,236.64 and 1,294.72

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Solution

The fourth proportional to 2,161.60, 3,236.64 and 1,294.72 is: 1,938.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.60 : 3,236.64 = 1,294.72 : x
  2. Step 2: Convert to fraction form
    2,161.60/3,236.64 = 1,294.72/x
  3. Step 3: Cross multiply
    2,161.60x = 3,236.64 × 1,294.72
  4. Step 4: Simplify right side
    2,161.60x = 4,190,542.54
  5. Step 5: Solve for x
    x = 4,190,542.54/2,161.60
  6. Step 6: Final answer
    x = 1,938.63

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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.