Home / 8,120.79-12,181.65-2,277.85

Finding the Fourth Proportional to 8,120.79, 12,181.65 and 2,277.85

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Solution

The fourth proportional to 8,120.79, 12,181.65 and 2,277.85 is: 3,416.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.79 : 12,181.65 = 2,277.85 : x
  2. Step 2: Convert to fraction form
    8,120.79/12,181.65 = 2,277.85/x
  3. Step 3: Cross multiply
    8,120.79x = 12,181.65 × 2,277.85
  4. Step 4: Simplify right side
    8,120.79x = 27,747,971.45
  5. Step 5: Solve for x
    x = 27,747,971.45/8,120.79
  6. Step 6: Final answer
    x = 3,416.91

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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.