Home / 4,911.90-7,367.81-2,138.19

Finding the Fourth Proportional to 4,911.90, 7,367.81 and 2,138.19

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Solution

The fourth proportional to 4,911.90, 7,367.81 and 2,138.19 is: 3,207.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.90 : 7,367.81 = 2,138.19 : x
  2. Step 2: Convert to fraction form
    4,911.90/7,367.81 = 2,138.19/x
  3. Step 3: Cross multiply
    4,911.90x = 7,367.81 × 2,138.19
  4. Step 4: Simplify right side
    4,911.90x = 15,753,766.97
  5. Step 5: Solve for x
    x = 15,753,766.97/4,911.90
  6. Step 6: Final answer
    x = 3,207.27

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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.