Home / 3,419.42-5,129.14-2,640.56

Finding the Fourth Proportional to 3,419.42, 5,129.14 and 2,640.56

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Solution

The fourth proportional to 3,419.42, 5,129.14 and 2,640.56 is: 3,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.42 : 5,129.14 = 2,640.56 : x
  2. Step 2: Convert to fraction form
    3,419.42/5,129.14 = 2,640.56/x
  3. Step 3: Cross multiply
    3,419.42x = 5,129.14 × 2,640.56
  4. Step 4: Simplify right side
    3,419.42x = 13,543,792.33
  5. Step 5: Solve for x
    x = 13,543,792.33/3,419.42
  6. Step 6: Final answer
    x = 3,960.84

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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.