Home / 3,422.47-5,132.62-2,172.19

Finding the Fourth Proportional to 3,422.47, 5,132.62 and 2,172.19

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Solution

The fourth proportional to 3,422.47, 5,132.62 and 2,172.19 is: 3,257.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.47 : 5,132.62 = 2,172.19 : x
  2. Step 2: Convert to fraction form
    3,422.47/5,132.62 = 2,172.19/x
  3. Step 3: Cross multiply
    3,422.47x = 5,132.62 × 2,172.19
  4. Step 4: Simplify right side
    3,422.47x = 11,149,025.84
  5. Step 5: Solve for x
    x = 11,149,025.84/3,422.47
  6. Step 6: Final answer
    x = 3,257.60

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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.