Home / 5,170.08-7,134.60-2,812.20

Finding the Fourth Proportional to 5,170.08, 7,134.60 and 2,812.20

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Solution

The fourth proportional to 5,170.08, 7,134.60 and 2,812.20 is: 3,880.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.08 : 7,134.60 = 2,812.20 : x
  2. Step 2: Convert to fraction form
    5,170.08/7,134.60 = 2,812.20/x
  3. Step 3: Cross multiply
    5,170.08x = 7,134.60 × 2,812.20
  4. Step 4: Simplify right side
    5,170.08x = 20,063,922.12
  5. Step 5: Solve for x
    x = 20,063,922.12/5,170.08
  6. Step 6: Final answer
    x = 3,880.78

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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.