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Finding the Fourth Proportional to 5,579.64, 8,369.46 and 2,987.64

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Solution

The fourth proportional to 5,579.64, 8,369.46 and 2,987.64 is: 4,481.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,579.64 : 8,369.46 = 2,987.64 : x
  2. Step 2: Convert to fraction form
    5,579.64/8,369.46 = 2,987.64/x
  3. Step 3: Cross multiply
    5,579.64x = 8,369.46 × 2,987.64
  4. Step 4: Simplify right side
    5,579.64x = 25,004,933.47
  5. Step 5: Solve for x
    x = 25,004,933.47/5,579.64
  6. Step 6: Final answer
    x = 4,481.46

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Similar ratio
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1.5x scale

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.