Home / 3,790.50-5,680.26-2,143.56

Finding the Fourth Proportional to 3,790.50, 5,680.26 and 2,143.56

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Solution

The fourth proportional to 3,790.50, 5,680.26 and 2,143.56 is: 3,212.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.50 : 5,680.26 = 2,143.56 : x
  2. Step 2: Convert to fraction form
    3,790.50/5,680.26 = 2,143.56/x
  3. Step 3: Cross multiply
    3,790.50x = 5,680.26 × 2,143.56
  4. Step 4: Simplify right side
    3,790.50x = 12,175,978.13
  5. Step 5: Solve for x
    x = 12,175,978.13/3,790.50
  6. Step 6: Final answer
    x = 3,212.24

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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.