Home / 4,212.28-5,811.78-2,720.26

Finding the Fourth Proportional to 4,212.28, 5,811.78 and 2,720.26

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Solution

The fourth proportional to 4,212.28, 5,811.78 and 2,720.26 is: 3,753.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.28 : 5,811.78 = 2,720.26 : x
  2. Step 2: Convert to fraction form
    4,212.28/5,811.78 = 2,720.26/x
  3. Step 3: Cross multiply
    4,212.28x = 5,811.78 × 2,720.26
  4. Step 4: Simplify right side
    4,212.28x = 15,809,552.66
  5. Step 5: Solve for x
    x = 15,809,552.66/4,212.28
  6. Step 6: Final answer
    x = 3,753.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.