Home / 5,247.12-7,241.46-2,889.60

Finding the Fourth Proportional to 5,247.12, 7,241.46 and 2,889.60

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Solution

The fourth proportional to 5,247.12, 7,241.46 and 2,889.60 is: 3,987.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.12 : 7,241.46 = 2,889.60 : x
  2. Step 2: Convert to fraction form
    5,247.12/7,241.46 = 2,889.60/x
  3. Step 3: Cross multiply
    5,247.12x = 7,241.46 × 2,889.60
  4. Step 4: Simplify right side
    5,247.12x = 20,924,922.82
  5. Step 5: Solve for x
    x = 20,924,922.82/5,247.12
  6. Step 6: Final answer
    x = 3,987.89

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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.