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Finding the Fourth Proportional to 8,281.82, 12,420.10 and 2,734.13

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Solution

The fourth proportional to 8,281.82, 12,420.10 and 2,734.13 is: 4,100.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281.82 : 12,420.10 = 2,734.13 : x
  2. Step 2: Convert to fraction form
    8,281.82/12,420.10 = 2,734.13/x
  3. Step 3: Cross multiply
    8,281.82x = 12,420.10 × 2,734.13
  4. Step 4: Simplify right side
    8,281.82x = 33,958,168.01
  5. Step 5: Solve for x
    x = 33,958,168.01/8,281.82
  6. Step 6: Final answer
    x = 4,100.33

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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.