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Finding the Fourth Proportional to 5,281.66, 7,922.48 and 2,163.12

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Solution

The fourth proportional to 5,281.66, 7,922.48 and 2,163.12 is: 3,244.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.66 : 7,922.48 = 2,163.12 : x
  2. Step 2: Convert to fraction form
    5,281.66/7,922.48 = 2,163.12/x
  3. Step 3: Cross multiply
    5,281.66x = 7,922.48 × 2,163.12
  4. Step 4: Simplify right side
    5,281.66x = 17,137,274.94
  5. Step 5: Solve for x
    x = 17,137,274.94/5,281.66
  6. Step 6: Final answer
    x = 3,244.68

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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.