Home / 3,138.83-4,706.42-1,189.97

Finding the Fourth Proportional to 3,138.83, 4,706.42 and 1,189.97

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Solution

The fourth proportional to 3,138.83, 4,706.42 and 1,189.97 is: 1,784.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.83 : 4,706.42 = 1,189.97 : x
  2. Step 2: Convert to fraction form
    3,138.83/4,706.42 = 1,189.97/x
  3. Step 3: Cross multiply
    3,138.83x = 4,706.42 × 1,189.97
  4. Step 4: Simplify right side
    3,138.83x = 5,600,493.47
  5. Step 5: Solve for x
    x = 5,600,493.47/3,138.83
  6. Step 6: Final answer
    x = 1,784.26

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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.