Home / 4,911.55-6,778.04-2,787.22

Finding the Fourth Proportional to 4,911.55, 6,778.04 and 2,787.22

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Solution

The fourth proportional to 4,911.55, 6,778.04 and 2,787.22 is: 3,846.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.55 : 6,778.04 = 2,787.22 : x
  2. Step 2: Convert to fraction form
    4,911.55/6,778.04 = 2,787.22/x
  3. Step 3: Cross multiply
    4,911.55x = 6,778.04 × 2,787.22
  4. Step 4: Simplify right side
    4,911.55x = 18,891,861.73
  5. Step 5: Solve for x
    x = 18,891,861.73/4,911.55
  6. Step 6: Final answer
    x = 3,846.42

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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.