Home / 3,123.70-4,686.85-1,367.80

Finding the Fourth Proportional to 3,123.70, 4,686.85 and 1,367.80

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Solution

The fourth proportional to 3,123.70, 4,686.85 and 1,367.80 is: 2,052.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.70 : 4,686.85 = 1,367.80 : x
  2. Step 2: Convert to fraction form
    3,123.70/4,686.85 = 1,367.80/x
  3. Step 3: Cross multiply
    3,123.70x = 4,686.85 × 1,367.80
  4. Step 4: Simplify right side
    3,123.70x = 6,410,673.43
  5. Step 5: Solve for x
    x = 6,410,673.43/3,123.70
  6. Step 6: Final answer
    x = 2,052.27

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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.