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Finding the Fourth Proportional to 5,327.42, 7,991.08 and 2,987.42

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Solution

The fourth proportional to 5,327.42, 7,991.08 and 2,987.42 is: 4,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,327.42 : 7,991.08 = 2,987.42 : x
  2. Step 2: Convert to fraction form
    5,327.42/7,991.08 = 2,987.42/x
  3. Step 3: Cross multiply
    5,327.42x = 7,991.08 × 2,987.42
  4. Step 4: Simplify right side
    5,327.42x = 23,872,712.21
  5. Step 5: Solve for x
    x = 23,872,712.21/5,327.42
  6. Step 6: Final answer
    x = 4,481.10

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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.