Home / 5,247.31-7,241.42-2,889.47

Finding the Fourth Proportional to 5,247.31, 7,241.42 and 2,889.47

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Solution

The fourth proportional to 5,247.31, 7,241.42 and 2,889.47 is: 3,987.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.31 : 7,241.42 = 2,889.47 : x
  2. Step 2: Convert to fraction form
    5,247.31/7,241.42 = 2,889.47/x
  3. Step 3: Cross multiply
    5,247.31x = 7,241.42 × 2,889.47
  4. Step 4: Simplify right side
    5,247.31x = 20,923,865.85
  5. Step 5: Solve for x
    x = 20,923,865.85/5,247.31
  6. Step 6: Final answer
    x = 3,987.54

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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.