Home / 5,247.45-7,241.40-2,889.68

Finding the Fourth Proportional to 5,247.45, 7,241.40 and 2,889.68

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Solution

The fourth proportional to 5,247.45, 7,241.40 and 2,889.68 is: 3,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.45 : 7,241.40 = 2,889.68 : x
  2. Step 2: Convert to fraction form
    5,247.45/7,241.40 = 2,889.68/x
  3. Step 3: Cross multiply
    5,247.45x = 7,241.40 × 2,889.68
  4. Step 4: Simplify right side
    5,247.45x = 20,925,292.55
  5. Step 5: Solve for x
    x = 20,925,292.55/5,247.45
  6. Step 6: Final answer
    x = 3,987.71

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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.