Home / 1,942.45-2,913.64-481.55

Finding the Fourth Proportional to 1,942.45, 2,913.64 and 481.55

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Solution

The fourth proportional to 1,942.45, 2,913.64 and 481.55 is: 722.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.45 : 2,913.64 = 481.55 : x
  2. Step 2: Convert to fraction form
    1,942.45/2,913.64 = 481.55/x
  3. Step 3: Cross multiply
    1,942.45x = 2,913.64 × 481.55
  4. Step 4: Simplify right side
    1,942.45x = 1,403,047.57
  5. Step 5: Solve for x
    x = 1,403,047.57/1,942.45
  6. Step 6: Final answer
    x = 722.31

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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.