Home / 3,414.78-5,123.40-1,772.10

Finding the Fourth Proportional to 3,414.78, 5,123.40 and 1,772.10

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Solution

The fourth proportional to 3,414.78, 5,123.40 and 1,772.10 is: 2,658.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,414.78 : 5,123.40 = 1,772.10 : x
  2. Step 2: Convert to fraction form
    3,414.78/5,123.40 = 1,772.10/x
  3. Step 3: Cross multiply
    3,414.78x = 5,123.40 × 1,772.10
  4. Step 4: Simplify right side
    3,414.78x = 9,079,177.14
  5. Step 5: Solve for x
    x = 9,079,177.14/3,414.78
  6. Step 6: Final answer
    x = 2,658.79

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1.5x scale

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.