Home / 3,123.40-4,305.86-2,227.58

Finding the Fourth Proportional to 3,123.40, 4,305.86 and 2,227.58

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Solution

The fourth proportional to 3,123.40, 4,305.86 and 2,227.58 is: 3,070.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.40 : 4,305.86 = 2,227.58 : x
  2. Step 2: Convert to fraction form
    3,123.40/4,305.86 = 2,227.58/x
  3. Step 3: Cross multiply
    3,123.40x = 4,305.86 × 2,227.58
  4. Step 4: Simplify right side
    3,123.40x = 9,591,647.62
  5. Step 5: Solve for x
    x = 9,591,647.62/3,123.40
  6. Step 6: Final answer
    x = 3,070.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.