Home / 8,091.48-12,138.39-3,931.73

Finding the Fourth Proportional to 8,091.48, 12,138.39 and 3,931.73

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Solution

The fourth proportional to 8,091.48, 12,138.39 and 3,931.73 is: 5,898.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.48 : 12,138.39 = 3,931.73 : x
  2. Step 2: Convert to fraction form
    8,091.48/12,138.39 = 3,931.73/x
  3. Step 3: Cross multiply
    8,091.48x = 12,138.39 × 3,931.73
  4. Step 4: Simplify right side
    8,091.48x = 47,724,811.42
  5. Step 5: Solve for x
    x = 47,724,811.42/8,091.48
  6. Step 6: Final answer
    x = 5,898.16

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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.