Home / 5,291.20-7,939.50-2,173.60

Finding the Fourth Proportional to 5,291.20, 7,939.50 and 2,173.60

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Solution

The fourth proportional to 5,291.20, 7,939.50 and 2,173.60 is: 3,261.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.20 : 7,939.50 = 2,173.60 : x
  2. Step 2: Convert to fraction form
    5,291.20/7,939.50 = 2,173.60/x
  3. Step 3: Cross multiply
    5,291.20x = 7,939.50 × 2,173.60
  4. Step 4: Simplify right side
    5,291.20x = 17,257,297.20
  5. Step 5: Solve for x
    x = 17,257,297.20/5,291.20
  6. Step 6: Final answer
    x = 3,261.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.