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Finding the Fourth Proportional to 4,881.11, 7,321.80 and 3,322.40

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Solution

The fourth proportional to 4,881.11, 7,321.80 and 3,322.40 is: 4,983.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.11 : 7,321.80 = 3,322.40 : x
  2. Step 2: Convert to fraction form
    4,881.11/7,321.80 = 3,322.40/x
  3. Step 3: Cross multiply
    4,881.11x = 7,321.80 × 3,322.40
  4. Step 4: Simplify right side
    4,881.11x = 24,325,948.32
  5. Step 5: Solve for x
    x = 24,325,948.32/4,881.11
  6. Step 6: Final answer
    x = 4,983.69

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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.