Home / 2,123.94-3,198.64-1,934.56

Finding the Fourth Proportional to 2,123.94, 3,198.64 and 1,934.56

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Solution

The fourth proportional to 2,123.94, 3,198.64 and 1,934.56 is: 2,913.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.94 : 3,198.64 = 1,934.56 : x
  2. Step 2: Convert to fraction form
    2,123.94/3,198.64 = 1,934.56/x
  3. Step 3: Cross multiply
    2,123.94x = 3,198.64 × 1,934.56
  4. Step 4: Simplify right side
    2,123.94x = 6,187,963.79
  5. Step 5: Solve for x
    x = 6,187,963.79/2,123.94
  6. Step 6: Final answer
    x = 2,913.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.