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Finding the Fourth Proportional to 3,858.96, 5,327.82 and 2,973.12

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Solution

The fourth proportional to 3,858.96, 5,327.82 and 2,973.12 is: 4,104.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.96 : 5,327.82 = 2,973.12 : x
  2. Step 2: Convert to fraction form
    3,858.96/5,327.82 = 2,973.12/x
  3. Step 3: Cross multiply
    3,858.96x = 5,327.82 × 2,973.12
  4. Step 4: Simplify right side
    3,858.96x = 15,840,248.20
  5. Step 5: Solve for x
    x = 15,840,248.20/3,858.96
  6. Step 6: Final answer
    x = 4,104.80

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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.