Home / 3,419.10-5,128.67-2,640.24

Finding the Fourth Proportional to 3,419.10, 5,128.67 and 2,640.24

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Solution

The fourth proportional to 3,419.10, 5,128.67 and 2,640.24 is: 3,960.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.10 : 5,128.67 = 2,640.24 : x
  2. Step 2: Convert to fraction form
    3,419.10/5,128.67 = 2,640.24/x
  3. Step 3: Cross multiply
    3,419.10x = 5,128.67 × 2,640.24
  4. Step 4: Simplify right side
    3,419.10x = 13,540,906.48
  5. Step 5: Solve for x
    x = 13,540,906.48/3,419.10
  6. Step 6: Final answer
    x = 3,960.37

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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.