Home / 8,123.54-12,180.36-3,195.50

Finding the Fourth Proportional to 8,123.54, 12,180.36 and 3,195.50

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Solution

The fourth proportional to 8,123.54, 12,180.36 and 3,195.50 is: 4,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.54 : 12,180.36 = 3,195.50 : x
  2. Step 2: Convert to fraction form
    8,123.54/12,180.36 = 3,195.50/x
  3. Step 3: Cross multiply
    8,123.54x = 12,180.36 × 3,195.50
  4. Step 4: Simplify right side
    8,123.54x = 38,922,340.38
  5. Step 5: Solve for x
    x = 38,922,340.38/8,123.54
  6. Step 6: Final answer
    x = 4,791.30

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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.