Home / 8,121.54-12,177.36-3,193.50

Finding the Fourth Proportional to 8,121.54, 12,177.36 and 3,193.50

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Solution

The fourth proportional to 8,121.54, 12,177.36 and 3,193.50 is: 4,788.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.54 : 12,177.36 = 3,193.50 : x
  2. Step 2: Convert to fraction form
    8,121.54/12,177.36 = 3,193.50/x
  3. Step 3: Cross multiply
    8,121.54x = 12,177.36 × 3,193.50
  4. Step 4: Simplify right side
    8,121.54x = 38,888,399.16
  5. Step 5: Solve for x
    x = 38,888,399.16/8,121.54
  6. Step 6: Final answer
    x = 4,788.30

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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.