Home / 5,170.53-7,135.38-2,812.67

Finding the Fourth Proportional to 5,170.53, 7,135.38 and 2,812.67

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Solution

The fourth proportional to 5,170.53, 7,135.38 and 2,812.67 is: 3,881.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.53 : 7,135.38 = 2,812.67 : x
  2. Step 2: Convert to fraction form
    5,170.53/7,135.38 = 2,812.67/x
  3. Step 3: Cross multiply
    5,170.53x = 7,135.38 × 2,812.67
  4. Step 4: Simplify right side
    5,170.53x = 20,069,469.26
  5. Step 5: Solve for x
    x = 20,069,469.26/5,170.53
  6. Step 6: Final answer
    x = 3,881.51

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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.