Home / 5,157.20-7,119.56-3,270.71

Finding the Fourth Proportional to 5,157.20, 7,119.56 and 3,270.71

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Solution

The fourth proportional to 5,157.20, 7,119.56 and 3,270.71 is: 4,515.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.20 : 7,119.56 = 3,270.71 : x
  2. Step 2: Convert to fraction form
    5,157.20/7,119.56 = 3,270.71/x
  3. Step 3: Cross multiply
    5,157.20x = 7,119.56 × 3,270.71
  4. Step 4: Simplify right side
    5,157.20x = 23,286,042.06
  5. Step 5: Solve for x
    x = 23,286,042.06/5,157.20
  6. Step 6: Final answer
    x = 4,515.25

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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.