Home / 5,170.20-7,134.66-2,812.20

Finding the Fourth Proportional to 5,170.20, 7,134.66 and 2,812.20

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Solution

The fourth proportional to 5,170.20, 7,134.66 and 2,812.20 is: 3,880.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.20 : 7,134.66 = 2,812.20 : x
  2. Step 2: Convert to fraction form
    5,170.20/7,134.66 = 2,812.20/x
  3. Step 3: Cross multiply
    5,170.20x = 7,134.66 × 2,812.20
  4. Step 4: Simplify right side
    5,170.20x = 20,064,090.85
  5. Step 5: Solve for x
    x = 20,064,090.85/5,170.20
  6. Step 6: Final answer
    x = 3,880.72

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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.