Home / 2,161.55-3,242.21-1,236.53

Finding the Fourth Proportional to 2,161.55, 3,242.21 and 1,236.53

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Solution

The fourth proportional to 2,161.55, 3,242.21 and 1,236.53 is: 1,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.55 : 3,242.21 = 1,236.53 : x
  2. Step 2: Convert to fraction form
    2,161.55/3,242.21 = 1,236.53/x
  3. Step 3: Cross multiply
    2,161.55x = 3,242.21 × 1,236.53
  4. Step 4: Simplify right side
    2,161.55x = 4,009,067.54
  5. Step 5: Solve for x
    x = 4,009,067.54/2,161.55
  6. Step 6: Final answer
    x = 1,854.72

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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.